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kim-em
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Apr 10, 2021
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| change algebra R (sections_subalgebra F), | ||
| have : algebra R (types.limit_cone (F ⋙ forget (Algebra.{v} R))).X | ||
| = algebra R (sections_subalgebra F), by refl, | ||
| rw this, |
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Wow, it's sad that this speeds things up.
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Yes, a lot of things in this PR are really weird. Here, it even changes the algebra structure that is inferred (see the next change in the PR, adding a convert).
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Some proofs using heavy `rfl` or heavy `obviously` can be sped up considerably. Done in this PR for some outstanding examples.
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Pull request successfully merged into master. Build succeeded: |
eric-wieser
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Apr 10, 2021
| -- Let `fr: p →L[ℝ] ℝ` be the real part of `f`. | ||
| let fr := re_clm.comp (f.restrict_scalars ℝ), | ||
| have fr_apply : ∀ x, fr x = re (f x) := λ x, rfl, | ||
| have fr_apply : ∀ x, fr x = re (f x), by { assume x, refl }, |
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Some proofs using heavy
rflor heavyobviouslycan be sped up considerably. Done in this PR for some outstanding examples.Cherry-picked from #7084, in which all the original proofs fixed in this PR timed out because of the added complexity to the definition of
monoids andadd_monoids. I don't know how long #7084 will take to get merged (or if it will ever get merged), but these seem good to have anyway, as shaving a few minutes from every mathlib compilations can only help.