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class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Romanian mathematician</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">For the novelist, see <a href="/wiki/N._D._Popescu-Popnedea" title="N. D. Popescu-Popnedea">N. D. Popescu-Popnedea</a>.</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Not to be confused with <a href="/wiki/Niculae_M._Popescu" title="Niculae M. Popescu">Niculae M. Popescu</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox biography vcard"><tbody><tr><th colspan="2" class="infobox-above" style="font-size:125%;"><div class="fn">Nicolae Popescu</div></th></tr><tr><th scope="row" class="infobox-label">Born</th><td class="infobox-data"><span style="display:none">(<span class="bday">1937-09-22</span>)</span>22 September 1937<br /><div style="display:inline" class="birthplace"><a href="/wiki/Strehaia" title="Strehaia">Strehaia-Comanda</a>, <a href="/wiki/Kingdom_of_Romania" title="Kingdom of Romania">Kingdom of Romania</a></div></td></tr><tr><th scope="row" class="infobox-label">Died</th><td class="infobox-data">29 July 2010<span style="display:none">(2010-07-29)</span> (aged 72)<br /><div style="display:inline" class="deathplace"><a href="/wiki/Bucharest" title="Bucharest">Bucharest</a>, <a href="/wiki/Romania" title="Romania">Romania</a></div></td></tr><tr><th scope="row" class="infobox-label">Nationality</th><td class="infobox-data category"><a href="/wiki/Flag" title="Flag">Romania</a></td></tr><tr><th scope="row" class="infobox-label">Alma mater</th><td class="infobox-data"><a href="/wiki/University_of_Bucharest" title="University of Bucharest">University of Bucharest</a></td></tr><tr><th scope="row" class="infobox-label">Known for</th><td class="infobox-data">Contributions to <a href="/wiki/Abelian_category" title="Abelian category">abelian category</a> theory, non-<a href="/wiki/Artinian_ring" title="Artinian ring">Artinian rings</a>/semi-Artinian rings and modules, <a href="/wiki/Gabriel%E2%80%93Popescu_theorem" title="Gabriel–Popescu theorem">Gabriel–Popescu theorem</a></td></tr><tr><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><b>Scientific career</b></td></tr><tr><th scope="row" class="infobox-label">Fields</th><td class="infobox-data category"><a href="/wiki/Mathematics" title="Mathematics">Mathematics</a>, <a href="/wiki/Category_theory" title="Category theory">Category theory</a></td></tr><tr><th scope="row" class="infobox-label">Institutions</th><td class="infobox-data"><a href="/wiki/Institute_of_Mathematics_of_the_Romanian_Academy" title="Institute of Mathematics of the Romanian Academy">Institute of Mathematics of the Romanian Academy</a><br /> <a href="/wiki/University_of_Bucharest" title="University of Bucharest">University of Bucharest</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Thesis" title="Thesis">Thesis</a></th><td class="infobox-data"><i> Krull–Remak–Schmidt Theorem and Theory of Decomposition </i> <span style="font-size:97%;">(1967)</span></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Doctoral_advisor" title="Doctoral advisor">Doctoral advisor</a></th><td class="infobox-data"><a href="/w/index.php?title=Gheorghe_Galbur%C4%83&action=edit&redlink=1" class="new" title="Gheorghe Galbură (page does not exist)">Gheorghe Galbură</a><span class="noprint" style="font-size:85%; font-style: normal;"> [<a href="https://ro.wikipedia.org/wiki/Gheorghe_Galbur%C4%83" class="extiw" title="ro:Gheorghe Galbură">ro</a>]</span></td></tr><tr><th scope="row" class="infobox-label">Doctoral students</th><td class="infobox-data"><a href="/wiki/Adrian_Iovi%C8%9B%C4%83" title="Adrian Ioviță">Adrian Ioviță</a><br /><a href="/wiki/Alexandru_Zaharescu" title="Alexandru Zaharescu">Alexandru Zaharescu</a></td></tr><tr style="display:none"><td colspan="2"> </td></tr></tbody></table> <p><b>Nicolae Popescu</b> (<style data-mw-deduplicate="TemplateStyles:r1177148991">.mw-parser-output .IPA-label-small{font-size:85%}.mw-parser-output .references .IPA-label-small,.mw-parser-output .infobox .IPA-label-small,.mw-parser-output .navbox .IPA-label-small{font-size:100%}</style><span class="IPA-label IPA-label-small">Romanian:</span> <span class="IPA nowrap" lang="ro-Latn-fonipa"><a href="/wiki/Help:IPA/Romanian" title="Help:IPA/Romanian">[nikoˈla.e<span class="wrap"> </span>poˈpesku]</a></span>; 22 September 1937 – 29 July 2010) was a <a href="/wiki/Romania" title="Romania">Romanian</a> <a href="/wiki/Mathematician" title="Mathematician">mathematician</a> and professor at the <a href="/wiki/University_of_Bucharest" title="University of Bucharest">University of Bucharest</a>. He also held a research position at the <a href="/wiki/Institute_of_Mathematics_of_the_Romanian_Academy" title="Institute of Mathematics of the Romanian Academy">Institute of Mathematics of the Romanian Academy</a>, and was elected <a href="/wiki/List_of_members_of_the_Romanian_Academy" title="List of members of the Romanian Academy">corresponding Member</a> of the <a href="/wiki/Romanian_Academy" title="Romanian Academy">Romanian Academy</a> in 1997.<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><p>He is best known for his contributions to <a href="/wiki/Algebra" title="Algebra">algebra</a> and the theory of <a href="/wiki/Abelian_categories" class="mw-redirect" title="Abelian categories">abelian categories</a>. From 1964 to 2007 he collaborated with <a href="/wiki/Pierre_Gabriel" title="Pierre Gabriel">Pierre Gabriel</a> on the characterization of abelian categories; their best-known result is the <a href="/wiki/Gabriel%E2%80%93Popescu_theorem" title="Gabriel–Popescu theorem">Gabriel–Popescu theorem</a>, published in 1964.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> His areas of expertise were <a href="/wiki/Category_theory" title="Category theory">category theory</a>, <a href="/wiki/Abelian_category" title="Abelian category">abelian categories</a> with applications to <a href="/wiki/Ring_(mathematics)" title="Ring (mathematics)">rings</a> and <a href="/wiki/Module_(mathematics)" title="Module (mathematics)">modules</a>, <a href="/wiki/Adjoint_functors" title="Adjoint functors">adjoint functors</a>, <a href="/wiki/Limit_(category_theory)" title="Limit (category theory)">limits and colimits</a>, the theory of sheaves, the theory of <a href="/wiki/Ring_theory" title="Ring theory">rings</a>, <a href="/wiki/Field_(mathematics)" title="Field (mathematics)">fields</a> and <a href="/wiki/Polynomial" title="Polynomial">polynomials</a>, and <a href="/wiki/Valuation_(algebra)" title="Valuation (algebra)">valuation theory</a>. He also had interests and published in <a href="/wiki/Algebraic_topology" title="Algebraic topology">algebraic topology</a>, <a href="/wiki/Algebraic_geometry" title="Algebraic geometry">algebraic geometry</a>, <a href="/wiki/Commutative_algebra" title="Commutative algebra">commutative algebra</a>, <a href="/wiki/K-theory" title="K-theory">K-theory</a>, <a href="/wiki/Class_field_theory" title="Class field theory">class field theory</a>, and <a href="/wiki/Functional_analysis" title="Functional analysis">algebraic function theory</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Biography">Biography</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nicolae_Popescu&action=edit&section=1" title="Edit section: Biography"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Popescu was born on September 22, 1937, in <a href="/wiki/Strehaia" title="Strehaia">Strehaia-Comanda</a>, <a href="/wiki/Mehedin%C8%9Bi_County" title="Mehedinți County">Mehedinți County</a>, <a href="/wiki/Romania" title="Romania">Romania</a>. In 1954 he graduated from the <a href="/wiki/Carol_I_National_College" title="Carol I National College">Carol I High School</a> in <a href="/wiki/Craiova" title="Craiova">Craiova</a> and went on to study mathematics at the <a href="/wiki/Alexandru_Ioan_Cuza_University" title="Alexandru Ioan Cuza University">University of Iași</a>. In his third year of studies he was expelled from the university, having been deemed "hostile to the regime" for remarking that "the achievements of American scientists are also worth of consideration."<sup id="cite_ref-ziua_3-0" class="reference"><a href="#cite_note-ziua-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Cernea_4-0" class="reference"><a href="#cite_note-Cernea-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> He then went back home to Strehaia, where he worked for a year in a collective farm, after which he was admitted in 1959 at the <a href="/wiki/University_of_Bucharest" title="University of Bucharest">University of Bucharest</a>, only to start anew as a freshman. Popescu earned his <a href="/wiki/Master_of_Science" title="Master of Science">M.S.</a> degree in mathematics in 1964, and his <a href="/wiki/Doctor_of_Philosophy" title="Doctor of Philosophy">Ph.D.</a> degree in mathematics in 1967, with thesis <i>Krull–Remak–Schmidt Theorem and Theory of Decomposition</i> written under the direction of <a href="/w/index.php?title=Gheorghe_Galbur%C4%83&action=edit&redlink=1" class="new" title="Gheorghe Galbură (page does not exist)">Gheorghe Galbură</a><span class="noprint" style="font-size:85%; font-style: normal;"> [<a href="https://ro.wikipedia.org/wiki/Gheorghe_Galbur%C4%83" class="extiw" title="ro:Gheorghe Galbură">ro</a>]</span>.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> He was awarded a <a href="/wiki/D._Phil." class="mw-redirect" title="D. Phil.">D. Phil.</a> degree (Doctor Docent) in 1972, also by the University of Bucharest. </p><p>While still a student, Popescu focused on <a href="/wiki/Category_theory" title="Category theory">category theory</a>. He first approached the general theory, with its connections to homological algebra and algebraic topology, then shifted his focus on theory of <a href="/wiki/Abelian_category" title="Abelian category">Abelian categories</a>, being one of the main promoters of this theory in Romania.<sup id="cite_ref-bull_6-0" class="reference"><a href="#cite_note-bull-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> He carried out mathematics studies at the Institute of Mathematics of the Romanian Academy in the Algebra research group,<sup id="cite_ref-algebra_7-0" class="reference"><a href="#cite_note-algebra-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> and also had international collaborations on three continents. He shared many moral, ethical, and religious values with <a href="/wiki/Alexander_Grothendieck" title="Alexander Grothendieck">Alexander Grothendieck</a>, who visited the Faculty of Mathematics in Bucharest in 1968. Like Grothendieck, he had a long-standing interest in category theory and <a href="/wiki/Number_theory" title="Number theory">number theory</a>, and supported promising young mathematicians in his fields of interest. He also promoted the early developments of category theory applications in <a href="/wiki/Mathematical_biology" class="mw-redirect" title="Mathematical biology">relational biology</a> and mathematical biophysics/<a href="/wiki/Mathematical_biology" class="mw-redirect" title="Mathematical biology">mathematical biology</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Academic_positions">Academic positions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nicolae_Popescu&action=edit&section=2" title="Edit section: Academic positions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Popescu was appointed as a Lecturer at the University of Bucharest in 1968 where he taught graduate students until 1972. Starting in 1964 he also held a research appointment at the <a href="/wiki/Institute_of_Mathematics_of_the_Romanian_Academy" title="Institute of Mathematics of the Romanian Academy">Institute of Mathematics of the Romanian Academy</a>.<sup id="cite_ref-vita_8-0" class="reference"><a href="#cite_note-vita-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-bull_6-1" class="reference"><a href="#cite_note-bull-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> The institute was closed in 1976 by order of <a href="/wiki/Nicolae_Ceau%C8%99escu" title="Nicolae Ceaușescu">Nicolae Ceaușescu</a> (for reasons related to his daughter <a href="/wiki/Zoia_Ceau%C8%99escu" title="Zoia Ceaușescu">Zoia Ceaușescu</a>, who had been hired at the institute two years before), but was reopened in 1990, after the <a href="/wiki/Romanian_Revolution" class="mw-redirect" title="Romanian Revolution">Romanian Revolution</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Publications">Publications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nicolae_Popescu&action=edit&section=3" title="Edit section: Publications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output 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//upload.wikimedia.org/wikipedia/commons/thumb/3/32/Scholia_logo.svg/80px-Scholia_logo.svg.png 2x" data-file-width="107" data-file-height="104" /></span></span></div> <div class="side-box-text plainlist"><a href="https://www.wikidata.org/wiki/Wikidata:Scholia" class="extiw" title="d:Wikidata:Scholia">Scholia</a> has a profile for <a href="https://iw.toolforge.org/scholia/Q7029316" class="extiw" title="toolforge:scholia/Q7029316"><b>Nicolae Popescu <small>(Q7029316)</small></b></a>.</div></div> </div> <p>Between 1962 and 2008 Popescu published more than 102 papers in peer-reviewed mathematics journals, several monographs on the theory of sheaves, and several books on <a href="/wiki/Category_theory" title="Category theory">abelian category theory</a> and <a href="/wiki/Abstract_algebra" title="Abstract algebra">abstract algebra</a>, including </p> <ul><li><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFPopescu1968" class="citation book cs1 cs1-prop-foreign-lang-source">Popescu, Nicolae (1968). <i>Elemente de teoria algebrică a numerelor</i> [<i>Elements of the Algebraic Theory of Numbers</i>] (in Romanian). Universitatea București.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Elemente+de+teoria+algebric%C4%83+a+numerelor&rft.pub=Universitatea+Bucure%C8%99ti&rft.date=1968&rft.aulast=Popescu&rft.aufirst=Nicolae&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANicolae+Popescu" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPopescuRadu1971" class="citation book cs1 cs1-prop-foreign-lang-source">Popescu, Nicolae; Radu, Alexandru (1971). <i>Teoria categoriilor și a fasciculelor</i> [<i>Category Theory and Sheaves</i>] (in Romanian). Editura Științifică.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Teoria+categoriilor+%C8%99i+a+fasciculelor&rft.pub=Editura+%C8%98tiin%C8%9Bific%C4%83&rft.date=1971&rft.aulast=Popescu&rft.aufirst=Nicolae&rft.au=Radu%2C+Alexandru&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANicolae+Popescu" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPopescu1971" class="citation book cs1 cs1-prop-foreign-lang-source">Popescu, Nicolae (1971). <i>Categorii abeliene</i> [<i>Abelian Categories</i>] (in Romanian). Editura Academiei. <a href="/wiki/MR_(identifier)" class="mw-redirect" title="MR (identifier)">MR</a> <a rel="nofollow" class="external text" href="https://mathscinet.ams.org/mathscinet-getitem?mr=0322011">0322011</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Categorii+abeliene&rft.pub=Editura+Academiei&rft.date=1971&rft_id=https%3A%2F%2Fmathscinet.ams.org%2Fmathscinet-getitem%3Fmr%3D0322011%23id-name%3DMR&rft.aulast=Popescu&rft.aufirst=Nicolae&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANicolae+Popescu" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPopescu1973" class="citation book cs1">Popescu, Nicolae (1973). <i>Abelian categories with applications to rings and modules</i>. London Mathematical Society Monographs. Vol. 3. London: Academic Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-12-561550-7" title="Special:BookSources/0-12-561550-7"><bdi>0-12-561550-7</bdi></a>. <a href="/wiki/MR_(identifier)" class="mw-redirect" title="MR (identifier)">MR</a> <a rel="nofollow" class="external text" href="https://mathscinet.ams.org/mathscinet-getitem?mr=0340375">0340375</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Abelian+categories+with+applications+to+rings+and+modules&rft.place=London&rft.series=London+Mathematical+Society+Monographs&rft.pub=Academic+Press&rft.date=1973&rft.isbn=0-12-561550-7&rft_id=https%3A%2F%2Fmathscinet.ams.org%2Fmathscinet-getitem%3Fmr%3D0340375%23id-name%3DMR&rft.aulast=Popescu&rft.aufirst=Nicolae&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANicolae+Popescu" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPopescuPopescu1979" class="citation book cs1">Popescu, Nicolae; Popescu, Liliana (1979). <i>Theory of categories</i>. Martinus Nijhoff Publishers, The Hague; Sijthoff & Noordhoff International Publishers, Alphen aan den Rijn. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2F978-94-009-9550-5">10.1007/978-94-009-9550-5</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/90-286-0168-6" title="Special:BookSources/90-286-0168-6"><bdi>90-286-0168-6</bdi></a>. <a href="/wiki/MR_(identifier)" class="mw-redirect" title="MR (identifier)">MR</a> <a rel="nofollow" class="external text" href="https://mathscinet.ams.org/mathscinet-getitem?mr=0538276">0538276</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Theory+of+categories&rft.pub=Martinus+Nijhoff+Publishers%2C+The+Hague%3B+Sijthoff+%26+Noordhoff+International+Publishers%2C+Alphen+aan+den+Rijn&rft.date=1979&rft_id=https%3A%2F%2Fmathscinet.ams.org%2Fmathscinet-getitem%3Fmr%3D0538276%23id-name%3DMR&rft_id=info%3Adoi%2F10.1007%2F978-94-009-9550-5&rft.isbn=90-286-0168-6&rft.aulast=Popescu&rft.aufirst=Nicolae&rft.au=Popescu%2C+Liliana&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANicolae+Popescu" class="Z3988"></span></li></ul> <p>In a <a href="/wiki/Alexander_Grothendieck" title="Alexander Grothendieck">Grothendieck</a>-like, energetic style, he initiated and provided scientific leadership to several seminars on category theory, sheaves and abstract algebra which resulted in a continuous stream of high-quality mathematical publications in international, peer-reviewed mathematics journals by several members participating in his Seminar series. </p> <div class="mw-heading mw-heading2"><h2 id="Personal_life">Personal life</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nicolae_Popescu&action=edit&section=4" title="Edit section: Personal life"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Popescu died in Bucharest on July 29, 2010.<sup id="cite_ref-Cernea_4-1" class="reference"><a href="#cite_note-Cernea-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> He is survived by his wife, Professor Dr. <a href="/w/index.php?title=Elena_Liliana_Popescu&action=edit&redlink=1" class="new" title="Elena Liliana Popescu (page does not exist)">Elena Liliana Popescu</a><span class="noprint" style="font-size:85%; font-style: normal;"> [<a href="https://ro.wikipedia.org/wiki/Elena_Liliana_Popescu" class="extiw" title="ro:Elena Liliana Popescu">ro</a>]</span> (a mathematician, poet, literary translator and editor), and their three children, one of whom, <a href="/w/index.php?title=Dan_Cristian_Popescu&action=edit&redlink=1" class="new" title="Dan Cristian Popescu (page does not exist)">Dan Cristian Popescu</a><span class="noprint" style="font-size:85%; font-style: normal;"> [<a href="https://ro.wikipedia.org/wiki/Dan_Cristian_Popescu" class="extiw" title="ro:Dan Cristian Popescu">ro</a>]</span>, is a politician.<sup id="cite_ref-ziua_3-1" class="reference"><a href="#cite_note-ziua-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Recognition">Recognition</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nicolae_Popescu&action=edit&section=5" title="Edit section: Recognition"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 1971 Popescu received the <a href="/wiki/Simion_Stoilow_Prize" title="Simion Stoilow Prize">Simion Stoilow Prize</a> in Mathematics of the Romanian Academy. He was elected President of the Romanian Mathematical Society in 1990<sup id="cite_ref-Cernea_4-2" class="reference"><a href="#cite_note-Cernea-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> and corresponding Member of the Romanian Academy in 1997. On the 80th anniversary of his birthday, the Faculty of Mathematics and Informatics at the University of Bucharest and the Institute of Mathematics of the Romanian Academy organized a conference in his memory.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nicolae_Popescu&action=edit&section=6" title="Edit section: Notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1 cs1-prop-foreign-lang-source"><a rel="nofollow" class="external text" href="https://acad.ro/bdar/armembriLit.php?vidT=P">"Membrii Academiei Române din 1866 până în prezent"</a> (in Romanian)<span class="reference-accessdate">. Retrieved <span class="nowrap">May 19,</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Membrii+Academiei+Rom%C3%A2ne+din+1866+p%C3%A2n%C4%83+%C3%AEn+prezent&rft_id=https%3A%2F%2Facad.ro%2Fbdar%2FarmembriLit.php%3FvidT%3DP&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANicolae+Popescu" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGabrielPopesco1964" class="citation cs2"><a href="/wiki/Pierre_Gabriel" title="Pierre Gabriel">Gabriel, Pierre</a>; Popesco, Nicolae (1964), "Caractérisation des catégories abéliennes avec générateurs et limites inductives exactes", <i><a href="/wiki/Comptes_rendus_de_l%27Acad%C3%A9mie_des_Sciences" title="Comptes rendus de l'Académie des Sciences">Comptes rendus de l'Académie des Sciences</a></i>, <b>258</b>: 4188–4190, <a href="/wiki/MR_(identifier)" class="mw-redirect" title="MR (identifier)">MR</a> <a rel="nofollow" class="external text" href="https://mathscinet.ams.org/mathscinet-getitem?mr=0166241">0166241</a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Comptes+rendus+de+l%27Acad%C3%A9mie+des+Sciences&rft.atitle=Caract%C3%A9risation+des+cat%C3%A9gories+ab%C3%A9liennes+avec+g%C3%A9n%C3%A9rateurs+et+limites+inductives+exactes&rft.volume=258&rft.pages=4188-4190&rft.date=1964&rft_id=https%3A%2F%2Fmathscinet.ams.org%2Fmathscinet-getitem%3Fmr%3D0166241%23id-name%3DMR&rft.aulast=Gabriel&rft.aufirst=Pierre&rft.au=Popesco%2C+Nicolae&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANicolae+Popescu" class="Z3988"></span></span> </li> <li id="cite_note-ziua-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-ziua_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-ziua_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMalamen2011" class="citation news cs1 cs1-prop-foreign-lang-source">Malamen, Iolanda (September 3, 2011). <a rel="nofollow" class="external text" href="https://www.ziuaveche.ro/exclusiv-zv/intalnirile-zv/nicolae-popescu-povestea-incredibila-a-unui-geniu-al-matematicii-romanesti-49632.html">"Nicolae Popescu. Povestea incredibilă a unui geniu al matematicii românești"</a>. <i>Ziua Veche</i> (in Romanian)<span class="reference-accessdate">. Retrieved <span class="nowrap">May 19,</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Ziua+Veche&rft.atitle=Nicolae+Popescu.+Povestea+incredibil%C4%83+a+unui+geniu+al+matematicii+rom%C3%A2ne%C8%99ti&rft.date=2011-09-03&rft.aulast=Malamen&rft.aufirst=Iolanda&rft_id=https%3A%2F%2Fwww.ziuaveche.ro%2Fexclusiv-zv%2Fintalnirile-zv%2Fnicolae-popescu-povestea-incredibila-a-unui-geniu-al-matematicii-romanesti-49632.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANicolae+Popescu" class="Z3988"></span></span> </li> <li id="cite_note-Cernea-4"><span class="mw-cite-backlink">^ <a href="#cite_ref-Cernea_4-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Cernea_4-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Cernea_4-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCernea" class="citation web cs1 cs1-prop-foreign-lang-source">Cernea, Valentin. <a rel="nofollow" class="external text" href="https://www.cafeneauapolitica.ro/geniu-al-matematicii-care-a-copilarit-intr-o-suburbie-a-orasului-strehaia/">"Geniu al matematicii care a copilărit într-o suburbie a orașului Strehaia"</a>. <i>www.cafeneauapolitica.ro</i> (in Romanian)<span class="reference-accessdate">. Retrieved <span class="nowrap">May 19,</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.cafeneauapolitica.ro&rft.atitle=Geniu+al+matematicii+care+a+copil%C4%83rit+%C3%AEntr-o+suburbie+a+ora%C8%99ului+Strehaia&rft.aulast=Cernea&rft.aufirst=Valentin&rft_id=https%3A%2F%2Fwww.cafeneauapolitica.ro%2Fgeniu-al-matematicii-care-a-copilarit-intr-o-suburbie-a-orasului-strehaia%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANicolae+Popescu" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://mathgenealogy.org/id.php?id=127579">Nicolae Popescu</a> at the <a href="/wiki/Mathematics_Genealogy_Project" title="Mathematics Genealogy Project">Mathematics Genealogy Project</a></span> </li> <li id="cite_note-bull-6"><span class="mw-cite-backlink">^ <a href="#cite_ref-bull_6-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-bull_6-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPopescuZaharescu2013" class="citation journal cs1 cs1-prop-long-vol">Popescu, Elena Liliana; <a href="/wiki/Alexandru_Zaharescu" title="Alexandru Zaharescu">Zaharescu, Alexandru</a> (2013). <a rel="nofollow" class="external text" href="https://ssmr.ro/bulletin/pdf/56-1/survey15ian.pdf">"A tribute to Professor Nicolae Popescu (1937–2010)"</a> <span class="cs1-format">(PDF)</span>. <i>Bull. Math. Soc. Sci. Math. Roumanie</i>. Nouvelle Série. 56(104) (1): 3–10. <a href="/wiki/MR_(identifier)" class="mw-redirect" title="MR (identifier)">MR</a> <a rel="nofollow" class="external text" href="https://mathscinet.ams.org/mathscinet-getitem?mr=3076686">3076686</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Bull.+Math.+Soc.+Sci.+Math.+Roumanie&rft.atitle=A+tribute+to+Professor+Nicolae+Popescu+%281937%E2%80%932010%29&rft.volume=56%28104%29&rft.issue=1&rft.pages=3-10&rft.date=2013&rft_id=https%3A%2F%2Fmathscinet.ams.org%2Fmathscinet-getitem%3Fmr%3D3076686%23id-name%3DMR&rft.aulast=Popescu&rft.aufirst=Elena+Liliana&rft.au=Zaharescu%2C+Alexandru&rft_id=https%3A%2F%2Fssmr.ro%2Fbulletin%2Fpdf%2F56-1%2Fsurvey15ian.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANicolae+Popescu" class="Z3988"></span></span> </li> <li id="cite_note-algebra-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-algebra_7-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1 cs1-prop-foreign-lang-source"><a rel="nofollow" class="external text" href="http://www.imar.ro/organization/people/wgrList.php?ID=4&DEN=Algebra">"Algebra Research Group"</a> (in Romanian). <a href="/wiki/Institute_of_Mathematics_of_the_Romanian_Academy" title="Institute of Mathematics of the Romanian Academy">Institute of Mathematics of the Romanian Academy</a><span class="reference-accessdate">. Retrieved <span class="nowrap">May 19,</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Algebra+Research+Group&rft.pub=Institute+of+Mathematics+of+the+Romanian+Academy&rft_id=http%3A%2F%2Fwww.imar.ro%2Forganization%2Fpeople%2FwgrList.php%3FID%3D4%26DEN%3DAlgebra&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANicolae+Popescu" class="Z3988"></span></span> </li> <li id="cite_note-vita-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-vita_8-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1 cs1-prop-foreign-lang-source"><a rel="nofollow" class="external text" href="http://www.imar.ro/~nipopesc/">"Curriculum Vitae – Nicolae Popescu"</a> (in Romanian). <a href="/wiki/Institute_of_Mathematics_of_the_Romanian_Academy" title="Institute of Mathematics of the Romanian Academy">Institute of Mathematics of the Romanian Academy</a><span class="reference-accessdate">. Retrieved <span class="nowrap">May 19,</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Curriculum+Vitae+%E2%80%93+Nicolae+Popescu&rft.pub=Institute+of+Mathematics+of+the+Romanian+Academy&rft_id=http%3A%2F%2Fwww.imar.ro%2F~nipopesc%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANicolae+Popescu" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1 cs1-prop-foreign-lang-source"><a rel="nofollow" class="external text" href="https://unibuc.ro/sesiune-comemorativa-dedicata-mentorului-nicolae-popescu-membru-al-academiei-romane-si-creator-al-scolii-romanesti-de-algebra-moderna-si-teoria-numerelor/">"Sesiune comemorativă dedicată mentorului Nicolae Popescu, membru al Academiei Române și creator al Școlii românești de Algebră modernă și Teoria numerelor"</a> (in Romanian). <a href="/wiki/University_of_Bucharest" title="University of Bucharest">University of Bucharest</a>. 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style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="http://data.bibliotheken.nl/id/thes/p067986048">Netherlands</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Academics</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://www.mathgenealogy.org/id.php?id=127579">Mathematics Genealogy Project</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://zbmath.org/authors/?q=ai:popescu.nicolae">zbMATH</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://mathscinet.ams.org/mathscinet/MRAuthorID/189372">MathSciNet</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://www.idref.fr/098794698">IdRef</a></span></li></ul></div></td></tr></tbody></table></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="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Nicolae_Popescu&oldid=1243917586">https://en.wikipedia.org/w/index.php?title=Nicolae_Popescu&oldid=1243917586</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:1937_births" title="Category:1937 births">1937 births</a></li><li><a href="/wiki/Category:2010_deaths" title="Category:2010 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