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Available in 75 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-75" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">75 kalbų</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Kromme" title="Kromme – afrikanų" lang="af" hreflang="af" data-title="Kromme" data-language-autonym="Afrikaans" data-language-local-name="afrikanų" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%85%D9%86%D8%AD%D9%86" title="منحن – arabų" lang="ar" hreflang="ar" data-title="منحن" data-language-autonym="العربية" data-language-local-name="arabų" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Curva" title="Curva – asturianų" lang="ast" hreflang="ast" data-title="Curva" data-language-autonym="Asturianu" data-language-local-name="asturianų" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%9B%D1%96%D0%BD%D1%96%D1%8F" title="Лінія – baltarusių" lang="be" hreflang="be" data-title="Лінія" data-language-autonym="Беларуская" data-language-local-name="baltarusių" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9A%D1%80%D0%B8%D0%B2%D0%B0" title="Крива – bulgarų" lang="bg" hreflang="bg" data-title="Крива" data-language-autonym="Български" data-language-local-name="bulgarų" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bjn mw-list-item"><a href="https://bjn.wikipedia.org/wiki/Langkuk" title="Langkuk – bandžarų" lang="bjn" hreflang="bjn" data-title="Langkuk" data-language-autonym="Banjar" data-language-local-name="bandžarų" class="interlanguage-link-target"><span>Banjar</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Kriva" title="Kriva – bosnių" lang="bs" hreflang="bs" data-title="Kriva" data-language-autonym="Bosanski" data-language-local-name="bosnių" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Corba" title="Corba – katalonų" lang="ca" hreflang="ca" data-title="Corba" data-language-autonym="Català" data-language-local-name="katalonų" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%DA%86%DB%95%D9%85%D8%A7%D9%88%DB%95" title="چەماوە – soranių kurdų" lang="ckb" hreflang="ckb" data-title="چەماوە" data-language-autonym="کوردی" data-language-local-name="soranių kurdų" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/K%C5%99ivka" title="Křivka – čekų" lang="cs" hreflang="cs" data-title="Křivka" data-language-autonym="Čeština" data-language-local-name="čekų" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%99%C4%95%D1%80_(%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B0)" title="Йĕр (математика) – čiuvašų" lang="cv" hreflang="cv" data-title="Йĕр (математика)" data-language-autonym="Чӑвашла" data-language-local-name="čiuvašų" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Cromlin" title="Cromlin – valų" lang="cy" hreflang="cy" data-title="Cromlin" data-language-autonym="Cymraeg" data-language-local-name="valų" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Kurve" title="Kurve – danų" lang="da" hreflang="da" data-title="Kurve" data-language-autonym="Dansk" data-language-local-name="danų" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Kurve_(Mathematik)" title="Kurve (Mathematik) – vokiečių" lang="de" hreflang="de" data-title="Kurve (Mathematik)" data-language-autonym="Deutsch" data-language-local-name="vokiečių" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9A%CE%B1%CE%BC%CF%80%CF%8D%CE%BB%CE%B7" title="Καμπύλη – graikų" lang="el" hreflang="el" data-title="Καμπύλη" data-language-autonym="Ελληνικά" data-language-local-name="graikų" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Curve" title="Curve – anglų" lang="en" hreflang="en" data-title="Curve" data-language-autonym="English" data-language-local-name="anglų" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Linio_(geometrio)" title="Linio (geometrio) – esperanto" lang="eo" hreflang="eo" data-title="Linio (geometrio)" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Curva" title="Curva – ispanų" lang="es" hreflang="es" data-title="Curva" data-language-autonym="Español" data-language-local-name="ispanų" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Joon" title="Joon – estų" lang="et" hreflang="et" data-title="Joon" data-language-autonym="Eesti" data-language-local-name="estų" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Kurba_(matematika)" title="Kurba (matematika) – baskų" lang="eu" hreflang="eu" data-title="Kurba (matematika)" data-language-autonym="Euskara" data-language-local-name="baskų" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%85%D9%86%D8%AD%D9%86%DB%8C" title="منحنی – persų" lang="fa" hreflang="fa" data-title="منحنی" data-language-autonym="فارسی" data-language-local-name="persų" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/K%C3%A4yr%C3%A4" title="Käyrä – suomių" lang="fi" hreflang="fi" data-title="Käyrä" data-language-autonym="Suomi" data-language-local-name="suomių" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Courbe" title="Courbe – prancūzų" lang="fr" hreflang="fr" data-title="Courbe" data-language-autonym="Français" data-language-local-name="prancūzų" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Cuar" title="Cuar – airių" lang="ga" hreflang="ga" data-title="Cuar" data-language-autonym="Gaeilge" data-language-local-name="airių" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Curva" title="Curva – galisų" lang="gl" hreflang="gl" data-title="Curva" data-language-autonym="Galego" data-language-local-name="galisų" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A2%D7%A7%D7%95%D7%9E%D7%94" title="עקומה – hebrajų" lang="he" hreflang="he" data-title="עקומה" data-language-autonym="עברית" data-language-local-name="hebrajų" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B5%E0%A4%95%E0%A5%8D%E0%A4%B0" title="वक्र – hindi" lang="hi" hreflang="hi" data-title="वक्र" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Krivulja" title="Krivulja – kroatų" lang="hr" hreflang="hr" data-title="Krivulja" data-language-autonym="Hrvatski" data-language-local-name="kroatų" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/G%C3%B6rbe_(matematika)" title="Görbe (matematika) – vengrų" lang="hu" hreflang="hu" data-title="Görbe (matematika)" data-language-autonym="Magyar" data-language-local-name="vengrų" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%BF%D5%B8%D6%80" title="Կոր – armėnų" lang="hy" hreflang="hy" data-title="Կոր" data-language-autonym="Հայերեն" data-language-local-name="armėnų" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Kurva" title="Kurva – indoneziečių" lang="id" hreflang="id" data-title="Kurva" data-language-autonym="Bahasa Indonesia" data-language-local-name="indoneziečių" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Kurvo" title="Kurvo – ido" lang="io" hreflang="io" data-title="Kurvo" data-language-autonym="Ido" data-language-local-name="ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Ferill" title="Ferill – islandų" lang="is" hreflang="is" data-title="Ferill" data-language-autonym="Íslenska" data-language-local-name="islandų" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Curva_(matematica)" title="Curva (matematica) – italų" lang="it" hreflang="it" data-title="Curva (matematica)" data-language-autonym="Italiano" data-language-local-name="italų" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E6%9B%B2%E7%B7%9A" title="曲線 – japonų" lang="ja" hreflang="ja" data-title="曲線" data-language-autonym="日本語" data-language-local-name="japonų" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%AC%E1%83%98%E1%83%A0%E1%83%98" title="წირი – gruzinų" lang="ka" hreflang="ka" data-title="წირი" data-language-autonym="ქართული" data-language-local-name="gruzinų" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Tameknut" title="Tameknut – kebailų" lang="kab" hreflang="kab" data-title="Tameknut" data-language-autonym="Taqbaylit" data-language-local-name="kebailų" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%96%D0%BE%D1%80%D0%B4%D0%B0%D0%BD_%D2%9B%D0%B8%D1%81%D1%8B%D2%93%D1%8B" title="Жордан қисығы – kazachų" lang="kk" hreflang="kk" data-title="Жордан қисығы" data-language-autonym="Қазақша" data-language-local-name="kazachų" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%B5%E0%B2%95%E0%B3%8D%E0%B2%B0%E0%B2%B0%E0%B3%87%E0%B2%96%E0%B3%86" title="ವಕ್ರರೇಖೆ – kanadų" lang="kn" hreflang="kn" data-title="ವಕ್ರರೇಖೆ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="kanadų" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EA%B3%A1%EC%84%A0" title="곡선 – korėjiečių" lang="ko" hreflang="ko" data-title="곡선" data-language-autonym="한국어" data-language-local-name="korėjiečių" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ln mw-list-item"><a href="https://ln.wikipedia.org/wiki/Lib%C3%BAnu" title="Libúnu – ngalų" lang="ln" hreflang="ln" data-title="Libúnu" data-language-autonym="Lingála" data-language-local-name="ngalų" class="interlanguage-link-target"><span>Lingála</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/L%C4%ABnija" title="Līnija – latvių" lang="lv" hreflang="lv" data-title="Līnija" data-language-autonym="Latviešu" data-language-local-name="latvių" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Biloka_(je%C3%B4metria)" title="Biloka (jeômetria) – malagasų" lang="mg" hreflang="mg" data-title="Biloka (jeômetria)" data-language-autonym="Malagasy" data-language-local-name="malagasų" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9A%D1%80%D0%B8%D0%B2%D0%B0" title="Крива – makedonų" lang="mk" hreflang="mk" data-title="Крива" data-language-autonym="Македонски" data-language-local-name="makedonų" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B5%E0%B4%95%E0%B5%8D%E0%B4%B0%E0%B4%82" title="വക്രം – malajalių" lang="ml" hreflang="ml" data-title="വക്രം" data-language-autonym="മലയാളം" data-language-local-name="malajalių" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Lengkung" title="Lengkung – malajiečių" lang="ms" hreflang="ms" data-title="Lengkung" data-language-autonym="Bahasa Melayu" data-language-local-name="malajiečių" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%B5%E0%A4%95%E0%A5%8D%E0%A4%B0" title="वक्र – nevari" lang="new" hreflang="new" data-title="वक्र" data-language-autonym="नेपाल भाषा" data-language-local-name="nevari" class="interlanguage-link-target"><span>नेपाल भाषा</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Kromme" title="Kromme – olandų" lang="nl" hreflang="nl" data-title="Kromme" data-language-autonym="Nederlands" data-language-local-name="olandų" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Kurve" title="Kurve – naujoji norvegų" lang="nn" hreflang="nn" data-title="Kurve" data-language-autonym="Norsk nynorsk" data-language-local-name="naujoji norvegų" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Kurve" title="Kurve – norvegų bukmolas" lang="nb" hreflang="nb" data-title="Kurve" data-language-autonym="Norsk bokmål" data-language-local-name="norvegų bukmolas" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%B5%E0%A8%95%E0%A8%B0" title="ਵਕਰ – pendžabų" lang="pa" hreflang="pa" data-title="ਵਕਰ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="pendžabų" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Krzywa" title="Krzywa – lenkų" lang="pl" hreflang="pl" data-title="Krzywa" data-language-autonym="Polski" data-language-local-name="lenkų" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Curva" title="Curva – portugalų" lang="pt" hreflang="pt" data-title="Curva" data-language-autonym="Português" data-language-local-name="portugalų" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Curb%C4%83" title="Curbă – rumunų" lang="ro" hreflang="ro" data-title="Curbă" data-language-autonym="Română" data-language-local-name="rumunų" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9A%D1%80%D0%B8%D0%B2%D0%B0%D1%8F" title="Кривая – rusų" lang="ru" hreflang="ru" data-title="Кривая" data-language-autonym="Русский" data-language-local-name="rusų" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Curva_(matim%C3%A0tica)" title="Curva (matimàtica) – siciliečių" lang="scn" hreflang="scn" data-title="Curva (matimàtica)" data-language-autonym="Sicilianu" data-language-local-name="siciliečių" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Krivulja" title="Krivulja – serbų-kroatų" lang="sh" hreflang="sh" data-title="Krivulja" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbų-kroatų" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Curve" title="Curve – Simple English" lang="en-simple" hreflang="en-simple" data-title="Curve" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Krivulja" title="Krivulja – slovėnų" lang="sl" hreflang="sl" data-title="Krivulja" data-language-autonym="Slovenščina" data-language-local-name="slovėnų" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sn mw-list-item"><a href="https://sn.wikipedia.org/wiki/Munyonga" title="Munyonga – šonų" lang="sn" hreflang="sn" data-title="Munyonga" data-language-autonym="ChiShona" data-language-local-name="šonų" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Lakorja" title="Lakorja – albanų" lang="sq" hreflang="sq" data-title="Lakorja" data-language-autonym="Shqip" data-language-local-name="albanų" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9A%D1%80%D0%B8%D0%B2%D0%B0" title="Крива – serbų" lang="sr" hreflang="sr" data-title="Крива" data-language-autonym="Српски / srpski" data-language-local-name="serbų" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Kurva" title="Kurva – švedų" lang="sv" hreflang="sv" data-title="Kurva" data-language-autonym="Svenska" data-language-local-name="švedų" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Mchirizo" title="Mchirizo – suahilių" lang="sw" hreflang="sw" data-title="Mchirizo" data-language-autonym="Kiswahili" data-language-local-name="suahilių" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%B5%E0%AE%B3%E0%AF%88%E0%AE%95%E0%AF%8B%E0%AE%9F%E0%AF%81" title="வளைகோடு – tamilų" lang="ta" hreflang="ta" data-title="வளைகோடு" data-language-autonym="தமிழ்" data-language-local-name="tamilų" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%80%E0%B8%AA%E0%B9%89%E0%B8%99%E0%B9%82%E0%B8%84%E0%B9%89%E0%B8%87" title="เส้นโค้ง – tajų" lang="th" hreflang="th" data-title="เส้นโค้ง" data-language-autonym="ไทย" data-language-local-name="tajų" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Kurba" title="Kurba – tagalogų" lang="tl" hreflang="tl" data-title="Kurba" data-language-autonym="Tagalog" data-language-local-name="tagalogų" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/E%C4%9Fri" title="Eğri – turkų" lang="tr" hreflang="tr" data-title="Eğri" data-language-autonym="Türkçe" data-language-local-name="turkų" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9A%D1%80%D0%B8%D0%B2%D0%B0" title="Крива – ukrainiečių" lang="uk" hreflang="uk" data-title="Крива" data-language-autonym="Українська" data-language-local-name="ukrainiečių" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D9%85%D9%86%D8%AD%D9%86%DB%8C" title="منحنی – urdų" lang="ur" hreflang="ur" data-title="منحنی" data-language-autonym="اردو" data-language-local-name="urdų" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/%C4%90%C6%B0%E1%BB%9Dng_cong" title="Đường cong – vietnamiečių" lang="vi" hreflang="vi" data-title="Đường cong" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamiečių" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E6%9B%B2%E7%BA%BF" title="曲线 – kinų kalbos vu tarmė" lang="wuu" hreflang="wuu" data-title="曲线" data-language-autonym="吴语" data-language-local-name="kinų kalbos vu tarmė" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%9B%B2%E7%BA%BF" title="曲线 – kinų" lang="zh" hreflang="zh" data-title="曲线" data-language-autonym="中文" data-language-local-name="kinų" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E6%9B%B2%E7%B7%9A" title="曲線 – klasikinė kinų" lang="lzh" hreflang="lzh" data-title="曲線" data-language-autonym="文言" data-language-local-name="klasikinė kinų" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E6%9B%B2%E7%B6%AB" title="曲綫 – kinų kalbos Kantono tarmė" lang="yue" hreflang="yue" data-title="曲綫" data-language-autonym="粵語" data-language-local-name="kinų kalbos Kantono tarmė" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q161973#sitelinks-wikipedia" title="Keisti tarpkalbines nuorodas" class="wbc-editpage">Keisti nuorodas</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Vardų sritys"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Kreiv%C4%97" title="Rodyti puslapio turinį [c]" accesskey="c"><span>Straipsnis</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Aptarimas:Kreiv%C4%97&action=edit&redlink=1" 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class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Parabola.svg/220px-Parabola.svg.png" decoding="async" width="220" height="266" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Parabola.svg/330px-Parabola.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Parabola.svg/440px-Parabola.svg.png 2x" data-file-width="400" data-file-height="484" /></a><figcaption>Parabolė – paprastos kreivės pavyzdys</figcaption></figure> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Vaizdas:H%C3%A9lice.gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/be/H%C3%A9lice.gif/220px-H%C3%A9lice.gif" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/be/H%C3%A9lice.gif/330px-H%C3%A9lice.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/be/H%C3%A9lice.gif/440px-H%C3%A9lice.gif 2x" data-file-width="612" data-file-height="612" /></a><figcaption>Sraigtinė linija – erdvės kreivė</figcaption></figure> <p><a href="/wiki/Geometrija" title="Geometrija">Elementariojoje geometrijoje</a> <b>kreivė</b> – vienmatis besitęsiantis objektas. Kreivių pavyzdžiai – <a href="/wiki/Apskritimas" title="Apskritimas">apskritimas</a>, <a href="/wiki/Ties%C4%97" title="Tiesė">tiesė</a>, <a href="/wiki/Hiperbol%C4%97_(matematika)" title="Hiperbolė (matematika)">hiperbolė</a>. </p><p>Kitose matematikos šakose kreivė apibrėžiama įvairiai, tai priklauso nuo nagrinėjimo tikslų ir metodų, pavyzdžiui, <a href="/wiki/Analizin%C4%97_geometrija" title="Analizinė geometrija">analizinėje geometrijoje</a> plokščiąja kreive vadinama <a href="/wiki/Aib%C4%97" title="Aibė">aibė</a> plokštumos taškų, kurių afiniosios koordinatės <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle x,y}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>x</mi> <mo>,</mo> <mi>y</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle x,y}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/5ea0abffd33a692ded22accc104515a032851dff" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:3.519ex; height:2.009ex;" alt="{\displaystyle x,y}"></span> tenkina lygtį <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle F(x,y)=0}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>F</mi> <mo stretchy="false">(</mo> <mi>x</mi> <mo>,</mo> <mi>y</mi> <mo stretchy="false">)</mo> <mo>=</mo> <mn>0</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle F(x,y)=0}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/c910dd64922e23f212bc46e970af0540811c48f2" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:11.33ex; height:2.843ex;" alt="{\displaystyle F(x,y)=0}"></span>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Apibrėžimas"><span id="Apibr.C4.97.C5.BEimas"></span>Apibrėžimas</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Kreiv%C4%97&veaction=edit&section=1" title="Redaguoti skyrelį: Apibrėžimas" class="mw-editsection-visualeditor"><span>redaguoti</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Kreiv%C4%97&action=edit&section=1" title="Edit section's source code: Apibrėžimas"><span>redaguoti vikitekstą</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Tarkime, kad <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle I}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>I</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle I}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/535ea7fc4134a31cbe2251d9d3511374bc41be9f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.172ex; height:2.176ex;" alt="{\displaystyle I}"></span> yra <a href="/wiki/Realusis_skai%C4%8Dius" title="Realusis skaičius">realiųjų skaičių</a> <a href="/wiki/Intervalas_(matematika)" title="Intervalas (matematika)">intervalas</a>, t. y. netuščias sujungtas <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathbb {R} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="double-struck">R</mi> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathbb {R} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/786849c765da7a84dbc3cce43e96aad58a5868dc" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.678ex; height:2.176ex;" alt="{\displaystyle \mathbb {R} }"></span> <a href="/wiki/Poaibis" title="Poaibis">poaibis</a>. Tada kreivė <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \!\,\gamma }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mspace width="negativethinmathspace" /> <mspace width="thinmathspace" /> <mi>γ</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \!\,\gamma }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/4e53e3efe54198a31c0acb0891297ee43e243a2f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; margin-left: -0.387ex; width:1.649ex; height:2.176ex;" alt="{\displaystyle \!\,\gamma }"></span> yra nenutrūkstama <a href="/wiki/Projekcija_(geometrija)" title="Projekcija (geometrija)">projekcija</a> <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \,\!\gamma :I\rightarrow X}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mspace width="thinmathspace" /> <mspace width="negativethinmathspace" /> <mi>γ</mi> <mo>:</mo> <mi>I</mi> <mo stretchy="false">→</mo> <mi>X</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \,\!\gamma :I\rightarrow X}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/1dbfb3f7cde9406359ba079d3fc1301f1e4a264e" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:9.965ex; height:2.676ex;" alt="{\displaystyle \,\!\gamma :I\rightarrow X}"></span>, kur <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle X}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>X</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle X}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/68baa052181f707c662844a465bfeeb135e82bab" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.98ex; height:2.176ex;" alt="{\displaystyle X}"></span> yra <a href="/w/index.php?title=Topologin%C4%97_erdv%C4%97&action=edit&redlink=1" class="new" title="Topologinė erdvė (puslapis neegzistuoja)">topologinė erdvė</a>. Kreivė <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \!\,\gamma }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mspace width="negativethinmathspace" /> <mspace width="thinmathspace" /> <mi>γ</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \!\,\gamma }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/4e53e3efe54198a31c0acb0891297ee43e243a2f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; margin-left: -0.387ex; width:1.649ex; height:2.176ex;" alt="{\displaystyle \!\,\gamma }"></span> yra <b>paprastoji</b>, jei galioja sąlyga, jog su bet kokiom <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle x}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>x</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle x}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/87f9e315fd7e2ba406057a97300593c4802b53e4" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.33ex; height:1.676ex;" alt="{\displaystyle x}"></span>, <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle y}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>y</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle y}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/b8a6208ec717213d4317e666f1ae872e00620a0d" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.155ex; height:2.009ex;" alt="{\displaystyle y}"></span> iš <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle I}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>I</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle I}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/535ea7fc4134a31cbe2251d9d3511374bc41be9f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.172ex; height:2.176ex;" alt="{\displaystyle I}"></span> reikšmėmis, <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \,\!\gamma (x)=\gamma (y)\rightarrow x=y}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mspace width="thinmathspace" /> <mspace width="negativethinmathspace" /> <mi>γ</mi> <mo stretchy="false">(</mo> <mi>x</mi> <mo stretchy="false">)</mo> <mo>=</mo> <mi>γ</mi> <mo stretchy="false">(</mo> <mi>y</mi> <mo stretchy="false">)</mo> <mo stretchy="false">→</mo> <mi>x</mi> <mo>=</mo> <mi>y</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \,\!\gamma (x)=\gamma (y)\rightarrow x=y}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/41256969ce66f2b82a248f8b94d6a9aa8ddef732" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:20.925ex; height:2.843ex;" alt="{\displaystyle \,\!\gamma (x)=\gamma (y)\rightarrow x=y}"></span>. </p><p>Kreivė <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \!\,\gamma }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mspace width="negativethinmathspace" /> <mspace width="thinmathspace" /> <mi>γ</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \!\,\gamma }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/4e53e3efe54198a31c0acb0891297ee43e243a2f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; margin-left: -0.387ex; width:1.649ex; height:2.176ex;" alt="{\displaystyle \!\,\gamma }"></span> yra <b>uždara</b> arba <b>ciklinė</b>, jei <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \,\!I=[a,b]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mspace width="thinmathspace" /> <mspace width="negativethinmathspace" /> <mi>I</mi> <mo>=</mo> <mo stretchy="false">[</mo> <mi>a</mi> <mo>,</mo> <mi>b</mi> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \,\!I=[a,b]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/4b0f3fa44a6d9368d331e8303f10350e2a1f52d4" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:8.825ex; height:2.843ex;" alt="{\displaystyle \,\!I=[a,b]}"></span> ir <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \!\,\gamma (a)=\gamma (b)}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mspace width="negativethinmathspace" /> <mspace width="thinmathspace" /> <mi>γ</mi> <mo stretchy="false">(</mo> <mi>a</mi> <mo stretchy="false">)</mo> <mo>=</mo> <mi>γ</mi> <mo stretchy="false">(</mo> <mi>b</mi> <mo stretchy="false">)</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \!\,\gamma (a)=\gamma (b)}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/c3d441a4d2a8c87f29b99d0aa0e0bfbba428e114" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; margin-left: -0.387ex; width:11.856ex; height:2.843ex;" alt="{\displaystyle \!\,\gamma (a)=\gamma (b)}"></span>. Taigi uždara kreivė yra nenutrūkstama apkritimo <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle S^{1}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mi>S</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle S^{1}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/60796c8d0c03cf575637d3202463b214d9635880" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.576ex; height:2.676ex;" alt="{\displaystyle S^{1}}"></span> projekcija; <b>paprastos uždaros kreivės</b> vadinamos <b>Žordano kreivėmis</b>. </p><p><b>Plokštumos kreivė</b> – kai <i>X</i> yra matematinė plokštuma ar, kai kuriais atvejais, projekcinė plokštuma. Paprasčiausios plokštumos kreivės yra pirmos eilės kreivė – <a href="/wiki/Ties%C4%97" title="Tiesė">tiesė</a>, bei antros eilės kreivės – <a href="/wiki/K%C5%ABgio_pj%C5%ABvis" title="Kūgio pjūvis">kūgio pjūviai</a>: <a href="/wiki/Elips%C4%97" title="Elipsė">elipsė</a>, <a href="/wiki/Parabol%C4%97" title="Parabolė">parabolė</a> ir <a href="/wiki/Hiperbol%C4%97_(matematika)" title="Hiperbolė (matematika)">hiperbolė</a>. <b>Erdvės kreivė</b> – kai <i>X</i> yra <a href="/wiki/Trimat%C4%97_erdv%C4%97" title="Trimatė erdvė">trimatė erdvė</a>, dažniausiai Euklido erdvė. Erdvės kreivės pavyzdys: <a href="/w/index.php?title=Sraigtin%C4%97_linija&action=edit&redlink=1" class="new" title="Sraigtinė linija (puslapis neegzistuoja)">sraigtinė linija</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Etimologija">Etimologija</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Kreiv%C4%97&veaction=edit&section=2" title="Redaguoti skyrelį: Etimologija" class="mw-editsection-visualeditor"><span>redaguoti</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Kreiv%C4%97&action=edit&section=2" title="Edit section's source code: Etimologija"><span>redaguoti vikitekstą</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Terminą „kreivė“ į lietuvių kalbos vartoseną įvedė kalbininkas <a href="/wiki/Jonas_Jablonskis" title="Jonas Jablonskis">Jonas Jablonskis</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Šaltiniai"><span id=".C5.A0altiniai"></span>Šaltiniai</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Kreiv%C4%97&veaction=edit&section=3" title="Redaguoti skyrelį: Šaltiniai" class="mw-editsection-visualeditor"><span>redaguoti</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Kreiv%C4%97&action=edit&section=3" title="Edit section's source code: Šaltiniai"><span>redaguoti vikitekstą</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="references-small" style="list-style-type: decimal;"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.vle.lt/straipsnis/kreive/">kreivė</a>(parengė Petras Vaškas). <a href="/wiki/Visuotin%C4%97_lietuvi%C5%B3_enciklopedija" title="Visuotinė lietuvių enciklopedija">Visuotinė lietuvių enciklopedija</a> (tikrinta 2024-02-03).</span> </li> </ol> </div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Rodomas puslapis "<a dir="ltr" href="https://lt.wikipedia.org/w/index.php?title=Kreivė&oldid=7379367">https://lt.wikipedia.org/w/index.php?title=Kreivė&oldid=7379367</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Specialus:Kategorijos" title="Specialus:Kategorijos">Kategorijos</a>: <ul><li><a href="/wiki/Kategorija:Kreiv%C4%97s" title="Kategorija:Kreivės">Kreivės</a></li><li><a href="/wiki/Kategorija:Topologija" title="Kategorija:Topologija">Topologija</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Šis puslapis paskutinį kartą keistas 12 rugsėjo 2024 09:24.</li> <li id="footer-info-copyright">Tekstas pateikiamas pagal <a rel="nofollow" class="external text" href="//creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution/Share-Alike Licenciją</a>; gali būti taikomos papildomos sąlygos. 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