Cohomology of Quotients in Symplectic and Algebraic Geometry. (MN-31), Volume 31
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Cohomology of Quotients in Symplectic and Algebraic Geometry. (MN-31), Volume 31

Frances Clare Kirwan

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eBook - PDF

Cohomology of Quotients in Symplectic and Algebraic Geometry. (MN-31), Volume 31

Frances Clare Kirwan

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About This Book

These notes describe a general procedure for calculating the Betti numbers of the projective quotient varieties that geometric invariant theory associates to reductive group actions on nonsingular complex projective varieties. These quotient varieties are interesting in particular because of their relevance to moduli problems in algebraic geometry. The author describes two different approaches to the problem. One is purely algebraic, while the other uses the methods of symplectic geometry and Morse theory, and involves extending classical Morse theory to certain degenerate functions.

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Information

Year
2020
ISBN
9780691214566

Table of contents