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Commit 2021-01-02 20:59 aa88bb81

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feat(measure_theory/borel_space): the inverse of a closed embedding is measurable (#5567)

Estimated changes

Modified src/data/set/function.lean

added theorem set.preimage_inv_fun_of_mem

added theorem set.preimage_inv_fun_of_not_mem

Modified src/measure_theory/borel_space.lean

added theorem closed_embedding.measurable_inv_fun