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Are there any criteria for a presheaf which is an etale sheaf to be a sheaf in the fppf topology?

oct 15 09 at 18:26 MathOverflow♦ 1●2●3

 
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Question about a family of semistable curves.

oct 23 09 at 18:43 David Speyer 56.3k●3●103●242

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