An Extension of Casson's Invariant. (AM-126), Volume 126 (PDF)
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- Synopsis
- This book describes an invariant, l, of oriented rational homology 3-spheres which is a generalization of work of Andrew Casson in the integer homology sphere case. Let R(X) denote the space of conjugacy classes of representations of p(X) into SU(2). Let (W,W,F) be a Heegaard splitting of a rational homology sphere M. Then l(M) is declared to be an appropriately defined intersection number of R(W) and R(W) inside R(F). The definition of this intersection number is a delicate task, as the spaces involved have singularities. A formula describing how l transforms under Dehn surgery is proved. The formula involves Alexander polynomials and Dedekind sums, and can be used to give a rather elementary proof of the existence of l. It is also shown that when M is a Z-homology sphere, l(M) determines the Rochlin invariant of M.
- Copyright:
- 1992
Book Details
- Book Quality:
- Publisher Quality
- ISBN-13:
- 9781400882465
- Related ISBNs:
- 9780691025322, 9780691087665
- Publisher:
- Princeton University Press
- Date of Addition:
- 09/26/17
- Copyrighted By:
- Princeton University Press
- Adult content:
- No
- Language:
- English
- Has Image Descriptions:
- No
- Categories:
- Nonfiction, Mathematics and Statistics
- Submitted By:
- Bookshare Staff
- Usage Restrictions:
- This is a copyrighted book.