David Sumner
id:
david-sumner-258-8952251
title:
David Sumner
text:
David P. Sumner is an American mathematician known for his research in graph theory. He formulated Sumner's conjecture that tournaments are universal graphs for polytrees in 1971, and showed in 1974 that all claw-free graphs with an even number of vertices have perfect matchings. He and András Gyárfás independently formulated the Gyárfás–Sumner conjecture according to which, for every tree T, the T-free graphs are χ-bounded. Sumner earned his doctorate from the University of Massachusetts Amhers
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wiki
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encyclopedia
description:
American mathematician
original url:
https://en.wikipedia.org/wiki/David_Sumner
date created:
date modified:
2022-05-11T12:19:39Z
main entity:
{"identifier":"Q21062278","url":"https://www.wikidata.org/entity/Q21062278"}
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13
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