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arXiv · 1906.00082

A counter-example to the equivariance structure on semi-universal deformation

An Khuong Doan
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Abstract

If $X$ is a projective variety and $G$ is an algebraic group acting algebraically on $X$, we provide a counter-example to the existence of a $G$-equivariant extension on the formal semi-universal deformation of $X$.

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An Khuong Doan. 2020-04-06. A counter-example to the equivariance structure on semi-universal deformation. https://doi.org/10.1007/s12220-020-00411-4

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