[Merged by Bors] - feat: measurability of the derivative of a function depending on a parameter#6903
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[Merged by Bors] - feat: measurability of the derivative of a function depending on a parameter#6903
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YaelDillies
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| simp only [HasFDerivAt, HasFDerivAtFilter, isLittleO_iff] at this | ||
| rcases eventually_nhds_iff_ball.1 (this (half_pos hε)) with ⟨R, R_pos, hR⟩ | ||
| let δ := (ε/2)/2 | ||
| have hδ : 0 < δ := half_pos (half_pos hε) |
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Could be positivity if you want to
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| refine MeasurableSet.iInter (fun _ ↦ ?_) | ||
| refine MeasurableSet.iUnion (fun _ ↦ ?_) | ||
| refine MeasurableSet.iInter (fun _ ↦ ?_) | ||
| refine MeasurableSet.iInter (fun _ ↦ ?_) | ||
| refine MeasurableSet.iInter (fun _ ↦ ?_) | ||
| refine MeasurableSet.iInter (fun _ ↦ ?_) |
YaelDillies
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YaelDillies
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Sep 6, 2023
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I'm not finding any golf anymore.
maintainer merge
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🚀 Pull request has been placed on the maintainer queue by YaelDillies. |
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…rameter (#6903) We reuse the main results that were proved for functions not depending on a parameter (but we need to tweak the definition of the set `A` to let it cover all cases, replacing a large inequality by a strict one).
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…rameter (#6903) We reuse the main results that were proved for functions not depending on a parameter (but we need to tweak the definition of the set `A` to let it cover all cases, replacing a large inequality by a strict one).
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kodyvajjha
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Sep 22, 2023
…rameter (#6903) We reuse the main results that were proved for functions not depending on a parameter (but we need to tweak the definition of the set `A` to let it cover all cases, replacing a large inequality by a strict one).
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We reuse the main results that were proved for functions not depending on a parameter (but we need to tweak the definition of the set
Ato let it cover all cases, replacing a large inequality by a strict one).There are also name cleanups (when a set is named
A, the lemma name should benot_mem_Aand notnot_mem_a, whatever the naming convention says), and a few prerequisites. I can split these off in other PRs if it makes things easier to review, just tell me.