[Merged by Bors] - feat(set): preliminaries for Haar measure #3189
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results on sets and finsets
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some changes:
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@fpvandoorn please put (at least) the name changes in the top post above the |
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Good idea! Done. |
jcommelin
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Jun 26, 2020
semorrison
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Jun 26, 2020
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Otherwise, LGTM. |
This was referenced Jun 27, 2020
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`comp_sup_eq_sup_comp` is renamed `comp_sup_eq_sup_comp_of_is_total` and there is a new version that doesn't assume that the order is linear. `set.image_injective` is renamed `function.injective.image_injective` (in the same way as the existing `function.surjective.preimage_injective`). `set.image_injective` is now an `iff`.
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Pull request successfully merged into master. Build succeeded: |
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In #3189 I removed it, which was a mistake
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In #3189 I removed it, which was a mistake.
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`comp_sup_eq_sup_comp` is renamed `comp_sup_eq_sup_comp_of_is_total` and there is a new version that doesn't assume that the order is linear. `set.image_injective` is renamed `function.injective.image_injective` (in the same way as the existing `function.surjective.preimage_injective`). `set.image_injective` is now an `iff`.
cipher1024
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Mar 15, 2022
…rover-community#3293) In leanprover-community#3189 I removed it, which was a mistake.
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comp_sup_eq_sup_compis renamedcomp_sup_eq_sup_comp_of_is_totaland there is a new version that doesn't assume that the order is linear.set.image_injectiveis renamedfunction.injective.image_injective(in the same way as the existingfunction.surjective.preimage_injective).set.image_injectiveis now aniff.PR 1/5(?) to put the Haar measure in mathlib. This PR: results about (fin)sets