Department of Computer Science | Institute of Theoretical Computer Science | CADMO

Theory of Combinatorial Algorithms

Prof. Emo Welzl and Prof. Bernd Gärtner

Mittagsseminar (in cooperation with M. Ghaffari, A. Steger and B. Sudakov)

Mittagsseminar Talk Information

Date and Time: Thursday, January 05, 2012, 12:15 pm

Duration: 30 minutes

Location: CAB G51

Speaker: Jan Foniok (Queen's University)

Some Ramsey applications

I don't really know what to say, so I will talk about some Ramsey theorems. After saying that they are just about the chromatic number of some hypergraph but that no Ramsey theorems can ever be proved by hypergraph-colouring theorems, I will show a Ramsey theorem proved by a hypergraph-colouring theorem. Afterwards I will discuss the paper [Decidable Relationships between Consistency Notions for Constraint Satisfaction Problems by A. Atserias and M. Weyer], where a Ramsey-type theorem is applied to a question related to the complexity of constraint satisfaction problems. The first part is joint work with Manuel Bodirsky.

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