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Iskovskikh Seminar
October 12, 2017 18:00, Moscow, Steklov Mathematical Institute, room 540
 


A projective variety with discrete, non-finitely generated automorphism group

Dmitry Mineev

National Research University "Higher School of Economics" (HSE), Moscow

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Abstract: We will describe two closely related constructions by J. Lesieutre, one yielding a variety over any field $K$ of characteristic zero such that its group of geometric components of automorphisms is not finitely generated; another yielding a variety with infinitely many $L/K$-forms for any quadratic extension $L/K$.

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