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Part of higher category theory that for instance in Algebraic Topology enables us to capture finer homotopic distinctions. As in say Eilenberg-Maclane spaces.

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Are most true statements about Math unprovable (undecidable)? [duplicate]

In an essay titled: All Questions Answered, Donald Knuth states that “In fact, we now know that in some sense almost all correct statements about mathematics are unprovable.” How do we know that? I’m …
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