inkspot
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Registered User
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Apr 17 |
comment |
How do I check whether an orbifold admits deformations? I get the impression that the OP writes "orbifold" to mean "geometric quotient of an orbifold". That is, a variety rather than a stack. In any case, it is true that every 2-dimensional quotient singularity is smoothable, because every 2-dimensional rational singularity is smoothable. See, for example, Artin's "An algebraic construction of Brieskorn's resolutions". |
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Jan 11 |
accepted | D-module that is coherent as O-module |
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Jan 10 |
revised |
D-module that is coherent as O-module Errors corrected and a query answered |
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Jan 10 |
answered | D-module that is coherent as O-module |
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Dec 20 |
comment |
Intuitive pictures in characteristic p I certainly can't make a good drawing of anything at all, but my picture of a separable map of, say, algebraic surfaces, is of the sea with a wave breaking along the ramification divisor, while a purely inseparable map is the sea where waves are breaking everywhere at once. Honestly, I find this at least slightly illuminating. |
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Nov 25 |
answered | Is there any holomorphic version of the tubular neighborhood theorem? |
