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Cohomology of Quotients in Symplectic and Algebraic Geometry. (Mn-31), Volume 31
Contributor(s): Kirwan, Frances Clare (Author)
ISBN: 0691083703     ISBN-13: 9780691083704
Publisher: Princeton University Press
OUR PRICE:   $90.25  
Product Type: Paperback - Other Formats
Published: December 1984
Qty:
Additional Information
BISAC Categories:
- Mathematics | Algebra - General
- Mathematics | Geometry - Algebraic
Dewey: 512.33
LCCN: 84015143
Physical Information: 0.58" H x 6.13" W x 8.76" (0.60 lbs) 216 pages
 
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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.