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Split Analysis.Calculus.LocalExtr #4830

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urkud opened this issue Jun 7, 2023 · 0 comments
Closed

Split Analysis.Calculus.LocalExtr #4830

urkud opened this issue Jun 7, 2023 · 0 comments

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@urkud
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urkud commented Jun 7, 2023

I did it in leanprover-community/mathlib#19124 but decided not to
merge it before the port is done.
@urkud urkud mentioned this issue Jul 16, 2023
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@bors bors bot closed this as completed in eec218b Jul 26, 2023
semorrison pushed a commit that referenced this issue Aug 14, 2023
@urkud @semorrison
refactor: split Analysis.Calculus.LocalExtr (#5944)
282e596 
Also make `f`/`f'` arguments implicit in all versions of Rolle's Theorem.

Fixes #4830

## API changes

- `exists_Ioo_extr_on_Icc`:
  - generalize from functions `f : ℝ → ℝ`
    to functions from a conditionally complete linear order
    to a linear order.
  - make `f` implicit;
- `exists_local_extr_Ioo`:
  - rename to `exists_isLocalExtr_Ioo`;
  - generalize as above;
  - make `f` implicit;
- `exists_isExtrOn_Ioo_of_tendsto`, `exists_isLocalExtr_Ioo_of_tendsto`:
  new lemmas extracted from the proof of `exists_hasDerivAt_eq_zero'`;
- `exists_hasDerivAt_eq_zero`, `exists_hasDerivAt_eq_zero'`:
  make `f` and `f'` implicit;
- `exists_deriv_eq_zero`, `exists_deriv_eq_zero'`:
  make `f` implicit.
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[Merged by Bors] - refactor: split Analysis.Calculus.LocalExtr leanprover-community/mathlib4
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@urkud @semorrison