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Symmetric obstruction theory
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Symmetric obstruction theory : ウィキペディア英語版
Symmetric obstruction theory

In mathematics, a symmetric obstruction theory, introduced by Kai Behrend, is a perfect obstruction theory together with nondegenerate symmetric bilinear form.
Example: Let ''f'' be a regular function on a smooth variety (or stack). Then the set of critical points of ''f'' carries a symmetric obstruction theory in a canonical way.
Example: Let ''M'' be a complex symplectic manifold. Then the (scheme-theoretic) intersection of Lagrangian submanifolds of ''M'' carries a canonical symmetric obstruction theory.
== References ==

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抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Symmetric obstruction theory」の詳細全文を読む



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