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Iskovskikh Seminar
April 21, 2011 18:00, Moscow, Steklov Mathematical Institute, room 540
 


The rank 2 Cremona group is hopfian (by a paper by J. Deserti)

Yu. Tsymbalov

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Abstract: We describe automorphisms of rank 2 Cremona group. We show that it is hopfian. In particular we prove that any rank 2 Cremona group automorphism is inner up to an automorphism of the base field.

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