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Article Dans Une Revue Beiträge zur Algebra und Geometrie / Contributions to Algebra and Geometry Année : 2016

Automorphism groups of Koras–Russell threefolds of the second kind

Résumé

We determine the automorphism groups of Koras-Russell threefolds of the second kind. In particular we show that these groups are semi-direct products of two subgroups, one given by the multiplicative group and the other isomorphic to a polynomial ring in two variables with the addition law. We also show that these groups are generated by algebraic subgroups isomorphic to Gm and Ga.
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Dates et versions

hal-01179229 , version 1 (22-07-2015)

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Charlie Petitjean. Automorphism groups of Koras–Russell threefolds of the second kind. Beiträge zur Algebra und Geometrie / Contributions to Algebra and Geometry, 2016, 57 (3), pp.599-605. ⟨10.1007/s13366-016-0282-x⟩. ⟨hal-01179229⟩
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