Construction of equivariant vector bundles

Details Construction of equivariant vector bundles Construction of equivariant vector bundles

2004-10-03

arxiv.org/abs/math/0410039v1

Mathematics

Algebraic Geometry

21 pages

Scientific paper

Let $X$ be the wonderful compactification of a complex adjoint symmetric space $G/K$ such that $rk(G/K)=rk(G)-rk(K)$. We show how to extend equivariant vector bundles on $G/K$ to equivariant vector bundles on $X$, generated by their global sections and having trivial higher cohomology groups. This relies on a geometric construction of equivariant vector bundles in the setting of varieties with reductive group action and ``multiplicity-free'' subvarieties.

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