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The hat problem on cycles on at least nine vertices

Abstract

The topic is the hat problem in which each of n players is randomly fitted with a blue or red hat. Then everybody can try to guess simultaneously his own hat color by looking at the hat colors of the other players. The team wins if at least one player guesses his hat color correctly, and no one guesses his hat color wrong; otherwise the team loses. The aim is to maximize the probability of winning. In this version every player can see everybody excluding himself. We consider such a problem on a graph, where vertices correspond to players, and a player can see each player to whom he is connected by an edge. The solution of the hat problem on a graph is known for trees and for the cycle C_4. We solve the problem on cycles on at least nine vertices.

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Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
ARS COMBINATORIA no. 101, pages 3 - 13,
ISSN: 0381-7032
Language:
English
Publication year:
2011
Bibliographic description:
Krzywkowski M.: The hat problem on cycles on at least nine vertices// ARS COMBINATORIA. -Vol. 101, (2011), s.3-13
Verified by:
Gdańsk University of Technology

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