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15 Ekim 2015, 15:40 
Orta Doğu Teknik Üniversitesi Matematik Bölümü Seminerleri M. Gökhan Benli
The growth function of a finitely generated group measures how fast the balls in its Cayley graphs grow. This asymptotic invariant attracted a lot of attention starting from M. Gromov's celebrated theorem about groups which grow polynomially. This talk will be a survey of history, open problems and recent developments around this notion. The main focus will be on groups whose growth is intermediate between polynomial and exponential constructed by R. Grigorchuk.
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