Mathematics Calendar | Friday, April 09 |
Stacks Seminar
Time: 11:30
Speaker: Jose Malagon-Lopez (Western) Title: "Some Characterizations of Stacks" Room: MC 107 Abstract: We will review the concept of a stack as a category where descent works. Starting with a stack as a sheaf of groupoids satisfying effective descent, we will review characterizations of stacks in terms of sieves, and in terms of fibrant models. |
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