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Questions about the determinant of square matrices or linear endomorphisms. Also for closely related topics such as minors or regularized determinants.

1 vote

What are Picard categories, where can I learn more about them, and why should I care to?

Pursuing stacks should fit here. There are plenty of uses of Picard categories (see the appendix), and in fact, the appendix list some examples of Picard 2, 3-categories.
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