Canadian Mathematical Society www.cms.math.ca
 location:  Publications → journals → CJM
Abstract view

# On Log $\mathbb Q$-Homology Planes and Weighted Projective Planes

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.