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On Log $\mathbb Q$-Homology Planes and Weighted Projective Planes |
Canad. J. Math. 56(2004), 1145-1189
Published:2004-12-01
Printed: Dec 2004
Printed: Dec 2004
- Daniel Daigle
- Peter Russell
Abstract
We classify normal affine surfaces with trivial Makar-Limanov
invariant and finite Picard group of the smooth locus, realizing them
as open subsets of weighted projective planes.
We also show that such a surface admits, up to conjugacy,
one or two $G_a$-actions.
| MSC Classifications: |
14R05 - Classification of affine varieties 14J26 - Rational and ruled surfaces 14R20 - Group actions on affine varieties [See also 13A50, 14L30] |