# David Conlon

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{{short description|Irish mathematician (born 1982)|bot=PearBOT 5}}
{{Use dmy dates|date=April 2022}}
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| caption           = Conlon in 2020
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| fields            = [Mathematics](/source/Mathematics)
| workplaces        = [University of Oxford](/source/University_of_Oxford)<br />[California Institute of Technology](/source/California_Institute_of_Technology)
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| education         = [University of Cambridge](/source/University_of_Cambridge) (PhD, 2009)<br />[Trinity College Dublin](/source/Trinity_College_Dublin) (2003)
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| thesis_title      = Upper Bounds for Ramsey Numbers<!--(or  | thesis1_title =  and  | thesis2_title = )-->
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'''David Conlon''' (born 1982) is an Irish mathematician who is a Professor of Mathematics at the [California Institute of Technology](/source/California_Institute_of_Technology). His research interests are in Hungarian-style [combinatorics](/source/combinatorics), particularly [Ramsey theory](/source/Ramsey_theory), [extremal graph theory](/source/extremal_graph_theory), [combinatorial number theory](/source/combinatorial_number_theory), and probabilistic methods in combinatorics.<ref name="David Conlon's Oxford Contact Page">{{cite web |title=Prof. David Conlon |url=http://www.its.caltech.edu/~dconlon/ |work=Caltech Website |publisher=Caltech |accessdate=1 June 2021}}</ref> He proved the first superpolynomial improvement on the Erdős–Szekeres bound on diagonal [Ramsey number](/source/Ramsey_number)s. He won the [European Prize in Combinatorics](/source/European_Prize_in_Combinatorics) in 2011 for his work in Ramsey theory and for his progress on [Sidorenko's conjecture](/source/Sidorenko's_conjecture), and the [Whitehead Prize](/source/Whitehead_Prize) in 2019.

== Life ==
Conlon represented Ireland in the [International Mathematical Olympiad](/source/International_Mathematical_Olympiad) in 1998 and 1999.<ref>{{cite web|title=International Mathematical Olympiad Results for Ireland|url=https://www.imo-official.org/country_individual_r.aspx?code=IRL|accessdate=7 July 2017}}</ref> He was an undergraduate in [Trinity College Dublin](/source/Trinity_College_Dublin), where he was [elected a Scholar](/source/List_of_Scholars_of_Trinity_College_Dublin) in 2001<ref name="TCD Scholars">{{cite web|title=TCD Scholars Since 1925|url=http://www.tcdlife.ie/scholars/scholar/about-list.php|accessdate=7 July 2017}}</ref> and graduated in 2003. He earned a PhD from [Cambridge University](/source/Cambridge_University) in 2009.<ref>{{MathGenealogy |id=138270 }}</ref>

In 2019 he moved to California Institute of Technology, having been a fellow of [Wadham College, Oxford](/source/Wadham_College%2C_Oxford) and Professor of Discrete Mathematics in the Mathematics Institute at the [University of Oxford](/source/University_of_Oxford).<ref name=":0">{{cite web|title=Curriculum Vitae – David Conlon|url=http://www.its.caltech.edu/~dconlon/cv.pdf|accessdate=1 June 2021}}</ref>

Conlon has worked in [Ramsey theory](/source/Ramsey_theory), and he proved the first superpolynomial improvement on the [Erdős–Szekeres bound](/source/Erd%C5%91s%E2%80%93Szekeres_bound) on diagonal [Ramsey number](/source/Ramsey_number)s.<ref name="Paper on Ramsey Numbers">{{cite web |last=Conlon |first=David |title=A New Upper Bound for Diagonal Ramsey Numbers |url=https://www.dpmms.cam.ac.uk/~dc340/RamseyUpper.pdf |work=www.dpmms.cam.ac.uk |publisher=University of Cambridge |accessdate=25 April 2014 |archive-date=4 March 2016 |archive-url=https://web.archive.org/web/20160304024326/https://www.dpmms.cam.ac.uk/~dc340/RamseyUpper.pdf |url-status=dead }}</ref> He won the [European Prize in Combinatorics](/source/European_Prize_in_Combinatorics) in 2011, for his work in Ramsey theory and for his progress on [Sidorenko's conjecture](/source/Sidorenko's_conjecture) that, for any [bipartite graph](/source/bipartite_graph) ''H'', uniformly random graphons have the fewest [subgraphs isomorphic to ''H''](/source/subgraph_isomorphism) when the edge density is fixed.<ref>{{citation|url=http://mta.hu/matematika_hirek/a-kombinatorika-kivalosagai-az-akademian-128508|title=A kombinatorika kiválóságai az Akadémián|publisher=[Hungarian Academy of Sciences](/source/Hungarian_Academy_of_Sciences)|language=Hungarian|date=September 1, 2011|url-status=dead|archiveurl=https://web.archive.org/web/20131106013006/http://mta.hu/matematika_hirek/a-kombinatorika-kivalosagai-az-akademian-128508|archivedate=November 6, 2013}}.</ref> He was awarded the [Whitehead Prize](/source/Whitehead_Prize) in 2019 "in recognition of his many contributions to combinatorics".<ref>{{cite web|title=Whitehead Prize 2019 Citation for Professor David Conlon|url=https://www.lms.ac.uk/sites/default/files/files/d_conlon.pdf|work=London Mathematical Society|publisher=LMS|accessdate=1 June 2021}}</ref>

From 2015 to 2020, Conlon was the Editor-in-Chief of the [Electronic Journal of Combinatorics](/source/Electronic_Journal_of_Combinatorics).<ref name=":0" />

==References==
{{Reflist}}

==External links==
*{{MathGenealogy |id=138270 }}
*{{cite web|url=http://www.pma.caltech.edu/people/david-conlon|title=David Conlon's home page at Caltech|access-date=2026-04-24}}
*{{cite web|url=https://www.its.caltech.edu/~dconlon/|title=David Conlon's home page|access-date=2026-04-24}}
*[http://www.maths.ox.ac.uk/contact/details/conlond Home page] {{Webarchive|url=https://web.archive.org/web/20120424170823/http://www.maths.ox.ac.uk/contact/details/conlond |date=24 April 2012 }} at Oxford
*{{Google scholar id}}
*{{IMO results |id=5361 }}

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{{DEFAULTSORT:Conlon, David}}
Category:1982 births
Category:Living people
Category:Alumni of Trinity College Dublin
Category:Alumni of the University of Cambridge
Category:California Institute of Technology faculty
Category:Combinatorialists
Category:International Mathematical Olympiad participants
Category:21st-century Irish mathematicians
Category:Scholars of Trinity College Dublin
Category:Place of birth missing (living people)

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Adapted from the Wikipedia article [David Conlon](https://en.wikipedia.org/wiki/David_Conlon) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/David_Conlon?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.