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Results tagged with ag.algebraic-geometry
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user 104720
Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology.
3
votes
1
answer
714
views
semi-log canonial singularities is an open condition?
Let $f:X\to \mathbb \Delta$ be family of projective varities which fibers are smooth, we know central fiber can be singular and may not be mild. Kollar introduced semi-log-canonical singularities to g …
- 42.9k
3
votes
1
answer
187
views
snc singularity is an open condition?
If $π : X → S$ is a family of complex projective
varieties, such that $X_0 := π^{−1}(0)$ has simple normal singularities in $X$, then all the general fibers $X_t$ have snc singularities at worst?
- 4,111
7
votes
1
answer
887
views
If monodromy representation is unipotent then special fiber is snc?
We know, if $π : X → S$ is a generically smooth family of complex projective
varieties, such that $X_0 := π^{−1}(0)$ is an snc divisor in $X$, then the
monodromy representation is unipotent. Now assum …
- 35.2k