Kezdjük korán a félévet. A következő kombinatorika szeminárium ideje
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     február 7. (péntek), !!!! 10:45 !!!!,
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helye
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     Kalmár Intézet, Árpád tér, szemináriumi szoba (második emelet, a
     folyosó vége)
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és előadása:

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Ping Hu (UIUC): 
<B>On some applications of flag algebras</B>
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The flag algebra method, invented by Razborov, is a very general
machinery and has been widely used in extremal graph theory. In this
talk, I will give an introduction to the flag algebra method,
explaining basic terms and showing how it works by giving a complete
proof of Mantel's theorem using the flag algebra method. I will also
show results we proved using this method, including upper bounds on
the number of edges of C<SUB>4</SUB>-free or C<SUB>6</SUB>-free subgraphs of
hypercubes, minimum number of monotone subsequences of length 4 in
permutations of [n].

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Minden érdeklődőt szeretettel várunk,

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Péter

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Supported by TÁMOP-4.2.2.A-11/1/KONV-2012-0073,
Telemedicine Oriented Research in the Fields of Mathematics,
Informatics and Medical Sciences