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Kalkulu tal-varjazzjonijiet - Wikipedija
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class="vector-toc-link" href="#Bibljografija"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Bibljografija</span> </div> </a> <ul id="toc-Bibljografija-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Kontenut" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Aħbi jew uri l-werrej" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Aħbi jew uri l-werrej</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Kalkulu tal-varjazzjonijiet</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Żur artiklu f'lingwa differenti. Disponibbli fi 45 lingwi" > <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-45" 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">45 lingwi</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AD%D8%B3%D8%A7%D8%A8_%D8%A7%D9%84%D9%85%D8%AA%D8%BA%D9%8A%D8%B1%D8%A7%D8%AA" title="حساب المتغيرات – Għarbi" lang="ar" hreflang="ar" data-title="حساب المتغيرات" data-language-autonym="العربية" data-language-local-name="Għarbi" 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/C%C3%A1lculu_de_variaciones" title="Cálculu de variaciones – Asturian" lang="ast" hreflang="ast" data-title="Cálculu de variaciones" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%92%D0%B0%D1%80%D0%B8%D0%B0%D1%86%D0%B8%D0%B0%D0%BB%D1%8B_%D0%B8%D2%AB%D3%99%D0%BF%D0%BB%D3%99%D0%BC%D3%99" title="Вариациалы иҫәпләмә – Bashkir" lang="ba" hreflang="ba" data-title="Вариациалы иҫәпләмә" data-language-autonym="Башҡортса" data-language-local-name="Bashkir" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%92%D0%B0%D1%80%D1%8B%D1%8F%D1%86%D1%8B%D0%B9%D0%BD%D0%B0%D0%B5_%D0%B7%D0%BB%D1%96%D1%87%D1%8D%D0%BD%D0%BD%D0%B5" title="Варыяцыйнае злічэнне – Belarussu" lang="be" hreflang="be" data-title="Варыяцыйнае злічэнне" data-language-autonym="Беларуская" data-language-local-name="Belarussu" 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%92%D0%B0%D1%80%D0%B8%D0%B0%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE_%D1%81%D0%BC%D1%8F%D1%82%D0%B0%D0%BD%D0%B5" title="Вариационно смятане – Bulgaru" lang="bg" hreflang="bg" data-title="Вариационно смятане" data-language-autonym="Български" data-language-local-name="Bulgaru" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/C%C3%A0lcul_de_variacions" title="Càlcul de variacions – Katalan" lang="ca" hreflang="ca" data-title="Càlcul de variacions" data-language-autonym="Català" data-language-local-name="Katalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Varia%C4%8Dn%C3%AD_po%C4%8Det" title="Variační počet – Ċek" lang="cs" hreflang="cs" data-title="Variační počet" data-language-autonym="Čeština" data-language-local-name="Ċek" 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%92%D0%B0%D1%80%D0%B8%D0%B0%D1%86%D0%B8%D0%BB%D0%BB%D0%B5_%D1%88%D1%83%D1%82%D0%BB%D0%B0%D0%B2" title="Вариацилле шутлав – Chuvash" lang="cv" hreflang="cv" data-title="Вариацилле шутлав" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Variationsrechnung" title="Variationsrechnung – Ġermaniż" lang="de" hreflang="de" data-title="Variationsrechnung" data-language-autonym="Deutsch" data-language-local-name="Ġermaniż" 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%9B%CE%BF%CE%B3%CE%B9%CF%83%CE%BC%CF%8C%CF%82_%CF%84%CF%89%CE%BD_%CE%BC%CE%B5%CF%84%CE%B1%CE%B2%CE%BF%CE%BB%CF%8E%CE%BD" title="Λογισμός των μεταβολών – Grieg" lang="el" hreflang="el" data-title="Λογισμός των μεταβολών" data-language-autonym="Ελληνικά" data-language-local-name="Grieg" 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/Calculus_of_variations" title="Calculus of variations – Ingliż" lang="en" hreflang="en" data-title="Calculus of variations" data-language-autonym="English" data-language-local-name="Ingliż" 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/Variada_kalkulo" title="Variada kalkulo – Esperanto" lang="eo" hreflang="eo" data-title="Variada kalkulo" 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/C%C3%A1lculo_de_variaciones" title="Cálculo de variaciones – Spanjol" lang="es" hreflang="es" data-title="Cálculo de variaciones" data-language-autonym="Español" data-language-local-name="Spanjol" 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/Variatsioonarvutus" title="Variatsioonarvutus – Estonjan" lang="et" hreflang="et" data-title="Variatsioonarvutus" data-language-autonym="Eesti" data-language-local-name="Estonjan" 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/Bariazioen_kalkulu" title="Bariazioen kalkulu – Bask" lang="eu" hreflang="eu" data-title="Bariazioen kalkulu" data-language-autonym="Euskara" data-language-local-name="Bask" 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/%D8%AD%D8%B3%D8%A7%D8%A8_%D8%AA%D8%BA%DB%8C%DB%8C%D8%B1%D8%A7%D8%AA" title="حساب تغییرات – Persjan" lang="fa" hreflang="fa" data-title="حساب تغییرات" data-language-autonym="فارسی" data-language-local-name="Persjan" 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/Variaatiolaskenta" title="Variaatiolaskenta – Finlandiż" lang="fi" hreflang="fi" data-title="Variaatiolaskenta" data-language-autonym="Suomi" data-language-local-name="Finlandiż" 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/Calcul_des_variations" title="Calcul des variations – Franċiż" lang="fr" hreflang="fr" data-title="Calcul des variations" data-language-autonym="Français" data-language-local-name="Franċiż" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/C%C3%A1lculo_de_variaci%C3%B3ns" title="Cálculo de variacións – Galiċjan" lang="gl" hreflang="gl" data-title="Cálculo de variacións" data-language-autonym="Galego" data-language-local-name="Galiċjan" 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%97%D7%A9%D7%91%D7%95%D7%9F_%D7%95%D7%A8%D7%99%D7%90%D7%A6%D7%99%D7%95%D7%AA" title="חשבון וריאציות – Ebrajk" lang="he" hreflang="he" data-title="חשבון וריאציות" data-language-autonym="עברית" data-language-local-name="Ebrajk" 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%BF%E0%A4%9A%E0%A4%B0%E0%A4%A3-%E0%A4%95%E0%A4%B2%E0%A4%A8" title="विचरण-कलन – Hindi" lang="hi" hreflang="hi" data-title="विचरण-कलन" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Vari%C3%A1ci%C3%B3sz%C3%A1m%C3%ADt%C3%A1s" title="Variációszámítás – Ungeriż" lang="hu" hreflang="hu" data-title="Variációszámítás" data-language-autonym="Magyar" data-language-local-name="Ungeriż" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Calcolo_delle_variazioni" title="Calcolo delle variazioni – Taljan" lang="it" hreflang="it" data-title="Calcolo delle variazioni" data-language-autonym="Italiano" data-language-local-name="Taljan" 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/%E5%A4%89%E5%88%86%E6%B3%95" title="変分法 – Ġappuniż" lang="ja" hreflang="ja" data-title="変分法" data-language-autonym="日本語" data-language-local-name="Ġappuniż" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%92%D0%B0%D1%80%D0%B8%D0%B0%D1%86%D0%B8%D1%8F%D0%BB%D1%8B%D2%9B_%D0%B5%D1%81%D0%B5%D0%BF%D1%82%D0%B5%D1%83" title="Вариациялық есептеу – Każak" lang="kk" hreflang="kk" data-title="Вариациялық есептеу" data-language-autonym="Қазақша" data-language-local-name="Każak" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%B3%80%EB%B6%84%EB%B2%95" title="변분법 – Korean" lang="ko" hreflang="ko" data-title="변분법" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Variatierekening" title="Variatierekening – Olandiż" lang="nl" hreflang="nl" data-title="Variatierekening" data-language-autonym="Nederlands" data-language-local-name="Olandiż" 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/Variasjonsrekning" title="Variasjonsrekning – Ninorsk Norveġiż" lang="nn" hreflang="nn" data-title="Variasjonsrekning" data-language-autonym="Norsk nynorsk" data-language-local-name="Ninorsk Norveġiż" 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/Variasjonsregning" title="Variasjonsregning – Bokmal Norveġiż" lang="nb" hreflang="nb" data-title="Variasjonsregning" data-language-autonym="Norsk bokmål" data-language-local-name="Bokmal Norveġiż" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Rachunek_wariacyjny" title="Rachunek wariacyjny – Pollakk" lang="pl" hreflang="pl" data-title="Rachunek wariacyjny" data-language-autonym="Polski" data-language-local-name="Pollakk" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/C%C3%A0lcol_dle_variassion" title="Càlcol dle variassion – Piedmontese" lang="pms" hreflang="pms" data-title="Càlcol dle variassion" data-language-autonym="Piemontèis" data-language-local-name="Piedmontese" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/C%C3%A1lculo_variacional" title="Cálculo variacional – Portugiż" lang="pt" hreflang="pt" data-title="Cálculo variacional" data-language-autonym="Português" data-language-local-name="Portugiż" 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/Calcul_varia%C8%9Bional" title="Calcul variațional – Rumen" lang="ro" hreflang="ro" data-title="Calcul variațional" data-language-autonym="Română" data-language-local-name="Rumen" 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%92%D0%B0%D1%80%D0%B8%D0%B0%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B5_%D0%B8%D1%81%D1%87%D0%B8%D1%81%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5" title="Вариационное исчисление – Russu" lang="ru" hreflang="ru" data-title="Вариационное исчисление" data-language-autonym="Русский" data-language-local-name="Russu" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Calculus_of_variations" title="Calculus of variations – Simple English" lang="en-simple" hreflang="en-simple" data-title="Calculus of variations" 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-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Varia%C4%8Dn%C3%BD_po%C4%8Det" title="Variačný počet – Slovakk" lang="sk" hreflang="sk" data-title="Variačný počet" data-language-autonym="Slovenčina" data-language-local-name="Slovakk" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Variacijski_ra%C4%8Dun" title="Variacijski račun – Sloven" lang="sl" hreflang="sl" data-title="Variacijski račun" data-language-autonym="Slovenščina" data-language-local-name="Sloven" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Analiza_e_variacionit" title="Analiza e variacionit – Albaniż" lang="sq" hreflang="sq" data-title="Analiza e variacionit" data-language-autonym="Shqip" data-language-local-name="Albaniż" 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/Varijacijski_ra%C4%8Dun" title="Varijacijski račun – Serb" lang="sr" hreflang="sr" data-title="Varijacijski račun" data-language-autonym="Српски / srpski" data-language-local-name="Serb" 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/Variationskalkyl" title="Variationskalkyl – Żvediż" lang="sv" hreflang="sv" data-title="Variationskalkyl" data-language-autonym="Svenska" data-language-local-name="Żvediż" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%92%D0%B0%D1%80%D1%96%D0%B0%D1%86%D1%96%D0%B9%D0%BD%D0%B5_%D1%87%D0%B8%D1%81%D0%BB%D0%B5%D0%BD%D0%BD%D1%8F" title="Варіаційне числення – Ukren" lang="uk" hreflang="uk" data-title="Варіаційне числення" 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class="vector-pinnable-header-label">Dehra</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mexxi għall-ġenb</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">aħbi</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Minn Wikipedija, l-enċiklopedija l-ħielsa</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="mt" dir="ltr"><p>Il-<b>kalkulu tal-varjazzjonijiet</b> hu qasam tal-<a href="/wiki/Matematika" title="Matematika">matematika</a> li jittratta <a href="/wiki/Funzjonijiet_(matematika)" title="Funzjonijiet (matematika)">funzjonijiet</a> ta’ funzjonijiet, differenti mill-<a href="/wiki/Analisi_matematika" title="Analisi matematika">analisi</a> ordinarja li tittratta funzjonijiet tan-numri. Dawn il-<i><a href="/w/index.php?title=Funzjonal&action=edit&redlink=1" class="new" title="Funzjonal (il-paġna ma teżistix)">funzjonali</a></i> jistgħu jkunu formulati, pereżempju, bħala integrali li jinvolvu funzjoni mhux magħrufa u d-derivati tagħha. L-interess hu fil-funzjonijiet <i>estremali</i>, jew dawk li jagħmlu l-valur tal-funzjonali massimu jew minimu. Xi problemi klassiċi fuq il-kurvi nistgħu inqegħduhom f’din il-forma: fost l-eżempji hemm il-kurva <a href="/w/index.php?title=Brakistokrona&action=edit&redlink=1" class="new" title="Brakistokrona (il-paġna ma teżistix)">brakistokrona</a>, il-mogħdija minn punt A għal punt B, mhux fl-istess linja vertikali, li matulha partiċella tinżel fl-inqas ħin taħt il-<a href="/w/index.php?title=Forza_ta%E2%80%99_gravit%C3%A0&action=edit&redlink=1" class="new" title="Forza ta’ gravità (il-paġna ma teżistix)">forza ta’ gravità</a>. Mela rridu nimminimizzaw il-funzjoni li tirrappreżenta l-ħin fuq il-kurvi kollha minn A għal B. </p><p>It-teorema tal-qofol tal-kalkulu tal-varjazzjonijiet hu l-<a href="/w/index.php?title=Ekwazzjonijiet_ta%E2%80%99_Euler-Lagrange&action=edit&redlink=1" class="new" title="Ekwazzjonijiet ta’ Euler-Lagrange (il-paġna ma teżistix)">ekwazzjoni ta’ Euler-Lagrange</a>. Din tikkorrispondi ma kondizzjoni ta’ stazzjonarjetà għall-funzjonal. Bħal fil-każ meta nfittxu l-massimi u l-minimi ta’ funzjoni, l-analisi tal-varjazzjonijiet żgħar madwar soluzzjoni tagħti kondizzjoni ta’ l-ewwel ordni. Ma nistgħux ngħidu direttament jekk inkunux sibna massimu, minimu, jew l-ebda wieħed. </p><p>Il-metodi varjazzjonali huma importanti fil-<a href="/w/index.php?title=Fi%C5%BCika_teorika&action=edit&redlink=1" class="new" title="Fiżika teorika (il-paġna ma teżistix)">fiżika teorika</a>: fil-<a href="/w/index.php?title=Mekkanika_lagran%C4%A1jana&action=edit&redlink=1" class="new" title="Mekkanika lagranġjana (il-paġna ma teżistix)">mekkanika lagranġjana</a> u fl-applikazzjoni tal-<a href="/w/index.php?title=Prin%C4%8Bipju_ta%E2%80%99_minima_azzjoni&action=edit&redlink=1" class="new" title="Prinċipju ta’ minima azzjoni (il-paġna ma teżistix)">prinċipju ta’ minima azzjoni</a> għall-<a href="/wiki/Mekkanika_kwantistika" title="Mekkanika kwantistika">fiżika kwantistika</a>. Il-metodi varjazzjonali jipprovdu l-bażi matematika għall-<a href="/w/index.php?title=Metodu_ta%E2%80%99_l-elementi_finiti&action=edit&redlink=1" class="new" title="Metodu ta’ l-elementi finiti (il-paġna ma teżistix)">metodu ta’ l-elementi finiti</a>, li hu biċċa għodda qawwija għar-riżoluzzjoni tal-<a href="/w/index.php?title=Problema_tax-xifer&action=edit&redlink=1" class="new" title="Problema tax-xifer (il-paġna ma teżistix)">problemi tax-xifer</a>. Huma użati ħafna wkoll fl-istudju ta’ l-ekwilibri statiċi fix-<a href="/wiki/Xjenza_tal-materjali" title="Xjenza tal-materjali">xjenza tal-materjali</a>, u fil-matematika pura, pereżempju fl-użu tal-<i><a href="/w/index.php?title=Prin%C4%8Bipju_ta%E2%80%99_Dirichlet&action=edit&redlink=1" class="new" title="Prinċipju ta’ Dirichlet (il-paġna ma teżistix)">prinċipju ta’ Dirichlet</a></i> għall-funzjonijiet armoniċi mill-lat ta’ <a href="/w/index.php?title=Bernhard_Riemann&action=edit&redlink=1" class="new" title="Bernhard Riemann (il-paġna ma teżistix)">Bernhard Riemann</a>. </p><p>L-istessi konċetti jidhru f’suriet oħra, pereżempju, bħala metodi fl-i<a href="/w/index.php?title=Spazju_ta%E2%80%99_Hilbert&action=edit&redlink=1" class="new" title="Spazju ta’ Hilbert (il-paġna ma teżistix)">spazji ta’ Hilbert</a>, fit-<a href="/w/index.php?title=Teorija_ta%E2%80%99_Morse&action=edit&redlink=1" class="new" title="Teorija ta’ Morse (il-paġna ma teżistix)">teorija ta’ Morse</a>, jew fil-<a href="/w/index.php?title=%C4%A0ometrija_simplettika&action=edit&redlink=1" class="new" title="Ġometrija simplettika (il-paġna ma teżistix)">ġometrija simplettika</a>. Il termini <i>varjazzjonali</i> tintuża fil-każi kollha ta’ funzjonali estremali. L-istudju tal-<a href="/w/index.php?title=%C4%A0eodetika&action=edit&redlink=1" class="new" title="Ġeodetika (il-paġna ma teżistix)">ġeodetiċi</a> fil-<a href="/w/index.php?title=%C4%A0ometrija_differenzjali&action=edit&redlink=1" class="new" title="Ġometrija differenzjali (il-paġna ma teżistix)">ġometrija differenzjali</a> hu qasam li ovvjament għandu kontenut varjazzjonali. Sar ħafna xogħol fuq il-problema tas-<i><a href="/w/index.php?title=Superfi%C4%8Bju_minimu&action=edit&redlink=1" class="new" title="Superfiċju minimu (il-paġna ma teżistix)">superfiċju minimu</a></i> (problema tal- <a href="/w/index.php?title=Bu%C5%BC%C5%BCieqa_tas-sapun&action=edit&redlink=1" class="new" title="Bużżieqa tas-sapun (il-paġna ma teżistix)">bużżieqa tas-sapun</a>), magħrufa wkoll bħala l-<a href="/w/index.php?title=Problema_ta%E2%80%99_Plateau&action=edit&redlink=1" class="new" title="Problema ta’ Plateau (il-paġna ma teżistix)">problema ta’ Plateau</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Paġni_li_għandhom_x’jaqsmu"><span id="Pa.C4.A1ni_li_g.C4.A7andhom_x.E2.80.99jaqsmu"></span>Paġni li għandhom x’jaqsmu</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Kalkulu_tal-varjazzjonijiet&veaction=edit&section=1" title="Editja s-sezzjoni: Paġni li għandhom x’jaqsmu" class="mw-editsection-visualeditor"><span>immodifika</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Kalkulu_tal-varjazzjonijiet&action=edit&section=1" title="Edit section's source code: Paġni li għandhom x’jaqsmu"><span>immodifika s-sors</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/w/index.php?title=Di%C5%BCugwaljanza_isoperimetrika&action=edit&redlink=1" class="new" title="Diżugwaljanza isoperimetrika (il-paġna ma teżistix)">Diżugwaljanza isoperimetrika</a></li> <li><a href="/w/index.php?title=Prin%C4%8Bipju_varjazzjonali_ta%E2%80%99_Hamilton&action=edit&redlink=1" class="new" title="Prinċipju varjazzjonali ta’ Hamilton (il-paġna ma teżistix)">Prinċipju varjazzjonali ta’ Hamilton</a></li> <li><a href="/w/index.php?title=Prin%C4%8Bipju_ta%E2%80%99_minima_azzjoni&action=edit&redlink=1" class="new" title="Prinċipju ta’ minima azzjoni (il-paġna ma teżistix)">Prinċipju ta’ Maupertuis</a></li> <li><a href="/w/index.php?title=Prin%C4%8Bipju_ta%E2%80%99_Fermat&action=edit&redlink=1" class="new" title="Prinċipju ta’ Fermat (il-paġna ma teżistix)">Prinċipju ta’ Fermat</a></li> <li><a href="/w/index.php?title=Prin%C4%8Bipju_ta%E2%80%99_minima_azzjoni&action=edit&redlink=1" class="new" title="Prinċipju ta’ minima azzjoni (il-paġna ma teżistix)">Prinċipju ta’ minima azzjoni</a></li> <li><a href="/w/index.php?title=Ottimizzazzjoni_infinito-dimensjonali&action=edit&redlink=1" class="new" title="Ottimizzazzjoni infinito-dimensjonali (il-paġna ma teżistix)">Ottimizzazzjoni infinito-dimensjonali</a></li> <li><a href="/w/index.php?title=Analisi_funzjonali&action=edit&redlink=1" class="new" title="Analisi funzjonali (il-paġna ma teżistix)">Analisi funzjonali</a></li> <li><a href="/w/index.php?title=Metodi_perturbattivi&action=edit&redlink=1" class="new" title="Metodi perturbattivi (il-paġna ma teżistix)">Metodi perturbattivi</a></li> <li><a href="/w/index.php?title=Metodi_diretti_fil-Kalkulu_Varjazzjonali&action=edit&redlink=1" class="new" title="Metodi diretti fil-Kalkulu Varjazzjonali (il-paġna ma teżistix)">Metodi diretti fil-Kalkulu Varjazzjonali</a></li></ul> <p><br /> </p> <div class="mw-heading mw-heading2"><h2 id="Ħoloq_esterni"><span id=".C4.A6oloq_esterni"></span>Ħoloq esterni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Kalkulu_tal-varjazzjonijiet&veaction=edit&section=2" title="Editja s-sezzjoni: Ħoloq esterni" class="mw-editsection-visualeditor"><span>immodifika</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Kalkulu_tal-varjazzjonijiet&action=edit&section=2" title="Edit section's source code: Ħoloq esterni"><span>immodifika s-sors</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060311033849/http://www.sm.luth.se/~johanb/applmath/chap3en/index.htm">Chapter III: Introduction to the calculus of variations</a> ta' Johan Byström, Lars-Erik Persson, and Fredrik Strömberg</li></ul> <div class="mw-heading mw-heading2"><h2 id="Bibljografija">Bibljografija</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Kalkulu_tal-varjazzjonijiet&veaction=edit&section=3" title="Editja s-sezzjoni: Bibljografija" class="mw-editsection-visualeditor"><span>immodifika</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Kalkulu_tal-varjazzjonijiet&action=edit&section=3" title="Edit section's source code: Bibljografija"><span>immodifika s-sors</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/w/index.php?title=Leonida_Tonelli&action=edit&redlink=1" class="new" title="Leonida Tonelli (il-paġna ma teżistix)">Tonelli, L.</a>: <a rel="nofollow" class="external text" href="http://quod.lib.umich.edu/cgi/t/text/text-idx?c=umhistmath&idno=ACQ6956">Fondamenti di calcolo delle variazioni</a>, N. Zanichelli, 1921-23</li> <li>Todhunter, I. <a rel="nofollow" class="external text" href="http://www.archive.org/details/histroyofthecalc033379mbp">A history of the calculus of variations</a>, Chelsea, 1861</li> <li>Carll, L. B. <a rel="nofollow" class="external text" href="http://www.archive.org/details/treatiseonthecal032865mbp">A Treatise On The Calculus Of Variations</a> John Wiley & sons, 1881</li> <li>Hancock, H. <a rel="nofollow" class="external text" href="http://www.archive.org/details/151181775">Lectures on the calculus of variations (the Weierstrassian theory)</a> Cincinnati University Press, 1904</li> <li>Bolza, O <a rel="nofollow" class="external text" href="http://name.umdl.umich.edu/ACM2513.0001.001">Lectures on the calculus of variations</a>, Chicago University Press, 1904</li> <li>Byerly, W. E. <a rel="nofollow" class="external text" href="http://name.umdl.umich.edu/ACQ6938.0001.001">Introduction to the calculus of variations</a> Harvard University Press, 1917</li> <li>Weinstock, R. <a rel="nofollow" class="external text" href="http://www.archive.org/details/calculusofvariat033563mbp">Calculus Of Variations With Applications To Physics And Engineering</a>, McGrawHill, 1952</li> <li>Hadamard J. e Fréchet, M. <a rel="nofollow" class="external text" href="http://www.archive.org/details/leconssurlecalcu00hadarich">Leçons sur le calcul des variations</a> (francese) Hermann, 1910</li> <li>Fomin, S.V. and Gelfand, I.M.: Calculus of Variations, Dover Publ., 2000</li> <li>Lebedev, L.P. and Cloud, M.J.: The Calculus of Variations and Functional Analysis with Optimal Control and Applications in Mechanics, World Scientific, 2003, pages 1-98</li> <li>Charles Fox: An Introduction to the Calculus of Variations, Dover Publ., 1987</li></ul> <p><br /> </p> <div class="tright portal" style="border:solid #aaa 1px;margin:0.5em 0 0.5em 0.5em;"> <table style="background:#f9f9f9; font-size:85%; line-height:110%;"> <tbody><tr> <td><span class="mw-default-size" typeof="mw:File"><a href="/wiki/Stampa:P_math.png" class="mw-file-description" title="1pxx28px"><img alt="1pxx28px" src="//upload.wikimedia.org/wikipedia/commons/b/b7/P_math.png" decoding="async" width="77" height="68" class="mw-file-element" data-file-width="77" data-file-height="68" /></a></span> </td> <td style="padding:0 0.2em;"><i><b><a href="/wiki/Portal:Matematika" title="Portal:Matematika">Portal Matematika </a></b></i> </td></tr></tbody></table> </div> <!-- NewPP limit report Parsed by mw‐api‐int.codfw.main‐7858d788f6‐rct2x Cached time: 20241101235254 Cache expiry: 2592000 Reduced expiry: false Complications: [] CPU time usage: 0.017 seconds Real time usage: 0.021 seconds Preprocessor visited node count: 74/1000000 Post‐expand include size: 325/2097152 bytes Template argument size: 33/2097152 bytes Highest expansion depth: 5/100 Expensive parser function count: 0/500 Unstrip recursion depth: 0/20 Unstrip post‐expand size: 0/5000000 bytes Number of Wikibase entities loaded: 0/400 --> <!-- Transclusion expansion time report (%,ms,calls,template) 100.00% 2.180 1 Mudell:Portal 100.00% 2.180 1 -total --> <!-- Saved in parser cache with key mtwiki:pcache:idhash:6802-0!canonical and timestamp 20241101235254 and revision id 298902. 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