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MIPT Interdepartmental Seminar on Discrete Mathematics
October 17, 2012, Dolgoprudnyi, Main building MIPT, room 113
 


Finitely defined nil-halfgroups and aperiodic tilings

I. A. Ivanov-Pogodaev, A. Ya. Kanel-Belov

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Abstract: The talk is devoted to Burnside-like conjecturesthe proof of Shevrins conjecture on existence of an infinite finitely defined nil-halfgroup and construction of a skew field finitely defined as a ring (a joint result with I. Rips).

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