分野別セミナー

題目：Hom-complexes and hypergraph colorings I
時間：14:30-15:30

題目：Hom-complexes and hypergraph colorings II
時間：16:00-17:00

要旨：
Hom-complexes of graph homomorphisms were introduced by Lov¥'asz and
studied further by Babson and Kozlov in connection with graph colorings.
Later, Kozlov generalized the construction of Hom-complexes to
arbitrary collection of maps between finite sets, which we can interpret

as the "space" of maps in the given collection. In this talk, we apply
this generalized Hom-complexes to r-uniform hypergraphs and study their

colorings.