Non-canonical isomorphisms
classification
🧮 math.CT
keywords
invertiblenaturaltransformationadditiveassertingaxiomscanonicalcanonically
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We give two examples of categorical axioms asserting that a canonically defined natural transformation is invertible where the invertibility of any natural transformation implies that the canonical one is invertible. The first example is distributive categories, the second (semi-)additive ones. We show that each follows from a general result about monoidal functors.
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