Gelfand-Tsetlin algebras and cohomology rings of Laumon spaces

Details Gelfand-Tsetlin algebras and cohomology rings of Laumon spaces Gelfand-Tsetlin algebras and cohomology rings of Laumon spaces

2008-05-31

arxiv.org/abs/0806.0072v3

Mathematics

Algebraic Geometry

the final version, to appear in Selecta Math

Scientific paper

Laumon moduli spaces are certain smooth closures of the moduli spaces of maps from the projective line to the flag variety of GL_n. We calculate the equivariant cohomology rings of the Laumon moduli spaces in terms of Gelfand-Tsetlin subalgebra of U(gl_n), and formulate a conjectural answer for the small quantum cohomology rings in terms of certain commutative shift of argument subalgebras of U(gl_n).

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