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Gorenstein Quotient Singularities in Dimension Three: (Memoirs of the American Mathematical Society)
By
Stephen Shing-Taung Yau (Author) Yu Yung (Author)
Paperback
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Description
If $G$ is a finite subgroup of $G\!L(3,{\mathbb C})$, then $G$ acts on ${\mathbb C}^3$, and it is known that ${\mathbb C}^3/G$ is Gorenstein if and only if $G$ is a subgroup of $S\!L(3,{\mathbb C})$. In this work, the authors begin with a classification of finite subgroups of $S\!L(3,{\mathbb C})$, including two types, (J) and (K), which have often been overlooked. They go on to present a general method for finding invariant polynomials and their relations to finite subgroups of $G\!L(3,{\mathbb C})$. The method is, in practice, substantially better than the classical method due to Noether. Some properties of quotient varieties are presented, along with a proof that ${\mathbb C}^3/G$ has isolated singularities if and only if $G$ is abelian and 1 is not an eigenvalue of $g$ for every nontrivial $g \in G$. The authors also find minimal quotient generators of the ring of invariant polynomials and relations among them.
More Details
- Contributor: Stephen Shing-Taung Yau
- Imprint: American Mathematical Society
- ISBN13: 9780821825679
- Number of Pages: 88
- Packaged Weight: 187
- Format: Paperback
- Publisher: American Mathematical Society
- Release Date: 1993-09-30
- Series: Memoirs of the American Mathematical Society
- Binding: Paperback / softback
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