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- Title
Q-GORENSTEIN DEFORMATIONS OF NONNORMAL SURFACES.
- Authors
Tziolas, Nikolaos
- Abstract
Abstract. Let Δ ⊂ H be the germ of a nonnormal surface along a proper curve with smooth components such that the high index points of H are semi-log-terminal and the Gorenstein singular points are semi-log-canonical of embedding dimension at most 4. We describe the sheaf T[sup1][subqG](H) of Q-Gorenstein deformations of H and we obtain criteria for Δ ⊂ H to have Q-Gorenstein terminal smoothings.
- Subjects
DEFORMATION of surfaces; GERMS (Mathematics); LOGARITHMIC curves; SURFACES of constant curvature; ALGEBRAIC surfaces; SMOOTHING (Numerical analysis)
- Publication
American Journal of Mathematics, 2009, Vol 131, Issue 1, p171
- ISSN
0002-9327
- Publication type
Article
- DOI
10.1353/ajm.0.0039