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Resolution of Singularities of Pairs Preserving Semi-simple Normal CrossingsVera Pacheco, Franklin 26 March 2012 (has links)
Let X denote a reduced algebraic variety and D a Weil divisor on X. The pair (X,D) is said to be semi-simple normal crossings (semi-snc) at a in X if X is simple normal crossings at a (i.e., a simple normal
crossings hypersurface, with respect to a local embedding in a smooth ambient variety),
and D is induced by the restriction to X of a hypersurface that is simple normal crossings with respect to X. For a pair (X,D), over a field of characteristic zero, we construct a composition of blowings-up
f:X'-->X such that the transformed pair (X',D') is everywhere semi-simple normal crossings, and f is an isomorphism over the semi-simple normal crossings locus of
(X,D). The result answers a question of Kolla'r.
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Resolution of Singularities of Pairs Preserving Semi-simple Normal CrossingsVera Pacheco, Franklin 26 March 2012 (has links)
Let X denote a reduced algebraic variety and D a Weil divisor on X. The pair (X,D) is said to be semi-simple normal crossings (semi-snc) at a in X if X is simple normal crossings at a (i.e., a simple normal
crossings hypersurface, with respect to a local embedding in a smooth ambient variety),
and D is induced by the restriction to X of a hypersurface that is simple normal crossings with respect to X. For a pair (X,D), over a field of characteristic zero, we construct a composition of blowings-up
f:X'-->X such that the transformed pair (X',D') is everywhere semi-simple normal crossings, and f is an isomorphism over the semi-simple normal crossings locus of
(X,D). The result answers a question of Kolla'r.
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