Smoothness, Semistability, and Toroidal Geometry
Abstract
We provide a new proof of the following result: Let $X$ be a variety of finite type over an algebraically closed field $k$ of characteristic 0, let $Z\subset X$ be a proper closed subset. There exists a modification $f:X_1 \rar X$, such that $X_1$ is a quasi-projective nonsingular variety and $Z_1 = f^{-1}(Z)_\red$ is a strict divisor of normal crossings. Needless to say, this theorem is a weak version of Hironaka's well known theorem on resolution of singularities. Our proof has the feature that it builds on two standard techniques of algebraic geometry: semistable reduction for curves, and toric geometry. Another proof of the same result was discovered independently by F. Bogomolov and T. Pantev. The two proofs are similar in spirit but quite different in detail.
- Publication:
-
arXiv e-prints
- Pub Date:
- March 1996
- DOI:
- 10.48550/arXiv.alg-geom/9603018
- arXiv:
- arXiv:alg-geom/9603018
- Bibcode:
- 1996alg.geom..3018A
- Keywords:
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- Mathematics - Algebraic Geometry;
- 14B05;
- 14M25;
- 14H10
- E-Print:
- 12 pages (in large font)., LATEX 2e (in latex 2.09 compatibility mode)