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Results tagged with duality
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user 10605
Use for questions regarding duality of mathematical object, i.e. dual spaces, objects with two possible interpretations etc.
4
votes
If a $\otimes$-idempotent object has a dual, must it be self-dual?
Ok, I have no idea how to fix the invariant of string diagrams, but I have an explicit counterexample. Consider the 2-category of distributors $Dist$: its objects are small categories, its morphisms f …
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