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[Merged by Bors] - chore: make two proofs robust #11983

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Proofs by simp with many -lemmas are very fragile, and indeed this one broke on nightly-testing.

Replaces with clearer proofs that use the relevant results already established, rather than fighting with simp.

@semorrison semorrison added the awaiting-review The author would like community review of the PR label Apr 7, 2024
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bors merge

@github-actions github-actions bot added ready-to-merge This PR has been sent to bors. and removed awaiting-review The author would like community review of the PR labels Apr 7, 2024
mathlib-bors bot pushed a commit that referenced this pull request Apr 7, 2024
Proofs by `simp` with many `-lemmas` are very fragile, and indeed this one broke on `nightly-testing`.

Replaces with clearer proofs that use the relevant results already established, rather than fighting with `simp`.

Co-authored-by: Scott Morrison <scott.morrison@gmail.com>
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mathlib-bors bot commented Apr 7, 2024

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title chore: make two proofs robust [Merged by Bors] - chore: make two proofs robust Apr 7, 2024
@mathlib-bors mathlib-bors bot closed this Apr 7, 2024
@mathlib-bors mathlib-bors bot deleted the rat_lemmas_robustify branch April 7, 2024 13:23
Louddy pushed a commit that referenced this pull request Apr 15, 2024
Proofs by `simp` with many `-lemmas` are very fragile, and indeed this one broke on `nightly-testing`.

Replaces with clearer proofs that use the relevant results already established, rather than fighting with `simp`.

Co-authored-by: Scott Morrison <scott.morrison@gmail.com>
atarnoam pushed a commit that referenced this pull request Apr 16, 2024
Proofs by `simp` with many `-lemmas` are very fragile, and indeed this one broke on `nightly-testing`.

Replaces with clearer proofs that use the relevant results already established, rather than fighting with `simp`.

Co-authored-by: Scott Morrison <scott.morrison@gmail.com>
uniwuni pushed a commit that referenced this pull request Apr 19, 2024
Proofs by `simp` with many `-lemmas` are very fragile, and indeed this one broke on `nightly-testing`.

Replaces with clearer proofs that use the relevant results already established, rather than fighting with `simp`.

Co-authored-by: Scott Morrison <scott.morrison@gmail.com>
callesonne pushed a commit that referenced this pull request Apr 22, 2024
Proofs by `simp` with many `-lemmas` are very fragile, and indeed this one broke on `nightly-testing`.

Replaces with clearer proofs that use the relevant results already established, rather than fighting with `simp`.

Co-authored-by: Scott Morrison <scott.morrison@gmail.com>
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