5 citations · 5 across the 5 of their papers we have counts for
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Factorization centers in dimension two and the Grothendieck ring of varieties
Hsueh-Yung Lin, Evgeny Shinder, Susanna Zimmermann
We initiate the study of factorization centers of birational maps, and complete it for surfaces over a perfect field in this article. We prove that for every birational automorphis…
Small G-varieties
Hanspeter Kraft, Andriy Regeta, Susanna Zimmermann
An affine varieties with an action of a semisimple group is called "small" if every non-trivial -orbit in is isomorphic to the orbit of a highest weight vector. Such a v…
Algebraic subgroups of the plane Cremona group over a perfect field
Julia Schneider, Susanna Zimmermann
We show that any infinite algebraic subgroup of the plane Cremona group over a perfect field is contained in a maximal algebraic subgroup of the plane Cremona group. We classify th…