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arXiv:1303.4585 [math.RT]AbstractReferencesReviewsResources

Irreducible components of quiver Grassmannians

Andrew Hubery

Published 2013-03-19, updated 2015-03-09Version 3

We prove a decomposition theorem for irreducible components of Grassmannians of submodules, as well as for other schemes arising from representation theory, thus generalising the result of Crawley-Boevey and Schroer for module varieties. The method is based on jet space calculations, using that the formation of direct sums induces a separable morphism of schemes.

Comments: Accepted by Trans. Amer. Math. Soc
Categories: math.RT, math.AG
Subjects: 16G30, 14M15
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