{{Short description|Danish mathematician (1925–2023)}} {{Use dmy dates|date=December 2023}} {{Infobox scientist |name = Bent Fuglede |image = Bent Fuglede 1972.jpg |image_size = 200px |caption = Fuglede in 1972 |birth_date = {{birth date|df=y|1925|10|08}} |birth_place = Copenhagen, Denmark |death_date = {{death date and age|df=y|2023|12|07|1925|10|08}} |death_place = Copenhagen, Denmark |residence = |citizenship = |nationality = |ethnicity = |field = Mathematics |work_institutions = |alma_mater = |doctoral_advisor = |doctoral_students = |known_for = Fuglede's conjecture<br>Fuglede's theorem<br>Fuglede−Kadison determinant |author_abbrev_bot = |author_abbrev_zoo = |influences = |influenced = |prizes = |religion = |footnotes = |signature = }}
'''Bent Fuglede''' (8 October 1925 – 7 December 2023) was a Danish mathematician.
== Early life and career == Fuglede was known for his contributions to mathematical analysis, in particular functional analysis, where he proved Fuglede's theorem and stated Fuglede's conjecture.<ref>{{cite web|last1=Amiot|first1=E.|last2= Weisstein|first2=E.W.|title=Fuglede's Conjecture|url=http://mathworld.wolfram.com/FugledesConjecture.html|publisher=MathWorld--A Wolfram Web Resource.}}</ref>
Fuglede graduated from Skt. Jørgens Gymnasium 1943 and received his mag. scient. og cand. mag. in 1948 at the University of Copenhagen after which he studied in USA until 1951. In 1952 he was employed as scientific assistant at Den Polytekniske Læreanstalt and in 1954 as amanuensis at Matematisk Institut University of Copenhagen, in 1958 associate professor, and in 1959 head of department.<ref name=Pol>''70 år: Bent Fuglede'' Politiken, 7 October 1995, 1. sektion, Side 15</ref><ref name=Berl>''Matematik for viderekomne. 70 i dag'' Berlingske Tidende, 8 October 1995, 2.sekt, Magasin, Side 13</ref> Fuglede also spent one year in Lund (Sweden) as Nordic docent.<ref name=Berl /> Fuglede received his dr.phil. (Ph.D.) in 1960 from the University of Copenhagen; his doctoral advisor was Børge Jessen,<ref>{{mathgenealogy|id=54284}}</ref> after which he became professor of math at Danmarks tekniske Højskole. In 1965 he became professor of math at the University of Copenhagen, where he stayed until his retirement in 1992.
Fuglede was a member of the Royal Danish Academy of Sciences and Letters,<ref>[http://www.royalacademy.dk/Medlemmer.aspx?ID=33&userid=521 Royal Academy webpage]</ref> the Finnish Academy of Science and Letters.<ref>[http://www.acadsci.fi/jasenet/ulkomaiset_jasenet.htm Foreign members] {{webarchive|url=https://web.archive.org/web/20141009063143/http://www.acadsci.fi/jasenet/ulkomaiset_jasenet.htm |date=9 October 2014 }}, Finnish Academy of Science and Letters, retrieved 16 February 2010.</ref> and the ''Bayerische Akademie der Wissenschaften''.<ref name=Berl /> In 2012 he became a fellow of the American Mathematical Society.<ref>[https://www.ams.org/profession/fellows-list List of Fellows of the American Mathematical Society], retrieved 29 December 2012.</ref>
== Personal life and death == Fuglede was married to Ólafía Einarsdóttir, an Icelandic archeologist and historian. They had one child together, Einar.<ref>{{Cite web|title=Bent Fuglede {{!}} lex.dk|url=https://biografiskleksikon.lex.dk/Bent_Fuglede|access-date=10 August 2020|website=Dansk Biografisk Leksikon|date=13 July 2012 |language=da}}</ref>
Bent Fuglede died in Copenhagen on 7 December 2023, at the age of 98.<ref>{{cite web |title=Bent Fuglede |url=https://afdoede.dk/en/memorial/315828/bent-fuglede |website=afdøde.dk |access-date=14 December 2023}}</ref>
== Books == * {{cite book |title=Finely Harmonic Functions|volume=289|series=Lecture Notes in Mathematics |last= Fuglede |first= Bent|year=1972 |publisher= Springer-Verlag|isbn= 978-3-540-06005-5}} * {{cite book |title=Harmonic maps between Riemannian polyhedra|volume=142|series= Cambridge tracts in mathematics |last1= Fuglede |first1= Bent |first2=James|last2= Eells |authorlink2=James Eells |year=2001 |publisher=Cambridge University Press |isbn= 0-521-77311-3 |url=https://books.google.com/books?id=8pjRqy5EfoEC}}
== References == {{reflist}}
== External links == * [http://www.math.ku.dk/~fuglede/ Fuglede's homepage] at the University of Copenhagen
{{Authority control}}
{{DEFAULTSORT:Fuglede, Bent}} Category:1925 births Category:2023 deaths Category:Danish mathematicians Category:University of Copenhagen alumni Category:Academic staff of the University of Copenhagen Category:Fellows of the American Mathematical Society Category:Members of the Royal Danish Academy of Sciences and Letters Category:Members of the Bavarian Academy of Sciences Category:Members of the Finnish Academy of Science and Letters Category:Scientists from Copenhagen