[Merged by Bors] - feat(Topology/Group/Profinite): Profinite group is limit of finite group#16992
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Thmoas-Guan wants to merge 231 commits intomasterfrom
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[Merged by Bors] - feat(Topology/Group/Profinite): Profinite group is limit of finite group#16992Thmoas-Guan wants to merge 231 commits intomasterfrom
Thmoas-Guan wants to merge 231 commits intomasterfrom
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…up-is-limit-of-finite-group
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…thub.com/leanprover-community/mathlib4 into profinite-group-is-limit-of-finite-group
and move exist_openNormalSubgroup_sub_open_nhd_of_one
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!bench |
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Here are the benchmark results for commit 4fbf384. |
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faenuccio
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Jan 12, 2025
faenuccio
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Jan 12, 2025
kbuzzard
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Jan 12, 2025
Co-authored-by: Filippo A. E. Nuccio <filippo.nuccio@univ-st-etienne.fr>
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I left one final nitpick comment. Many thanks! [edit: and I forgot to send it; it's sent now. Sorry for the delay.] bors d+ |
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✌️ Thmoas-Guan can now approve this pull request. To approve and merge a pull request, simply reply with |
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Sorry, where is the "nitpick comment"? I didn't found it. Do you mean to use obtain rather than rcases? |
kbuzzard
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Jan 16, 2025
Co-authored-by: Kevin Buzzard <k.buzzard@imperial.ac.uk>
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bors r+ |
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…oup (#16992) Prove that any profinite group is limit of finite groups.
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Pull request successfully merged into master. Build succeeded: |
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* polynomial-sequences: (149 commits) Aha, here's how to get Lean to stop showing S.elems' in the infoview. Try satisfying the linter gods again. Probably enough initial tidying to send the PR. Kill more temporary names. Touch more natDegree. Does protected satisfy the docstring linter? Bit shorter. More Quiet linters. Remove redundant imports. Copyright header and more twiddling. Rename lemma to 'degree_smul_of_leadingCoeff_rightRegular' and split out feat(Polynomial): polynomial sequences are bases for R[X] chore(Dynamics/PeriodicPts): don't import `MonoidWithZero` (#20765) chore(Associated): split out `Ring` results (#20737) feat(AlgebraicGeometry): flat morphisms of schemes (#19790) feat(AlgebraicGeometry): scheme-theoretic fibre (#19427) chore: split Mathlib.Analysis.Asymptotics.Asymptotics (#20785) doc: typo (#20829) feat(CategoryTheory): condition for an induced functor between comma categories to be final (#20139) feat(1000.yaml): allow statements of theorems also (#20637) feat(Algebra/Homology/Embedding): homology of truncGE' (#19570) chore: cleanup many porting notes in Combinatorics (#20823) chore: eliminate porting notes about `deriving Fintype` (#20820) feat(Algebra/Lie): a Lie algebra is solvable iff it is solvable after faithfully flat base change (#20808) feat: define bases of root pairings (#20667) feat(Tactic): basic ConcreteCategory support for elementwise (#20811) feat(CategoryTheory): define unbundled `ConcreteCategory` class (#20810) chore(CategoryTheory): rename `ConcreteCategory` to `HasForget` (#20809) feat: `CommSemiring (NonemptyInterval ℚ≥0)` (#20783) chore(yaml_check.py): re-format (#20807) feat: elementary estimate for Real.log (#20766) feat: definition of linear topologies (#14990) feat(RingTheory): flatness over a semiring (#19115) feat(Algebra/Homology/Embedding): the canonical truncation truncLE (#19550) feat(Algebra/Homology/Embedding): API for the homology of an extension of homological complex (#19203) feat(Algebra/Ring): `RingEquiv.piUnique` (#20794) feat(RingTheory/LocalRing): add instance `Unique (MaximalSpectrum R)` for a local ring `R` (#20801) chore(GroupExtension/Defs): define `Section` and redefine `Splitting` (#20802) chore: restore `def` to `adicCompletion` (#20796) refactor: rename `UniqueContinuousFunctionalCalculus` to `ContinuousMap.UniqueHom` (#20643) feat(Algebra/Homology/Embedding): the morphism from a complex to its `truncGE` truncation (#19544) chore(Mathlib/Computability/TuringMachine): split file (#20790) feat(Data/Finset/Card): add `InjOn` and `SurjOn` versions of finset cardinality lemmas (#20753) feat(Order/WellFoundedSet): add convenience constructors for IsWF and IsPWO for WellFoundedLT types (#20752) feat(Set/Finite): a set is finite if its image and fibers are finite (#20751) chore: cleanup .gitignore files (#20795) feat(Topology/Group/Profinite): Profinite group is limit of finite group (#16992) feat(Combinatorics/SimpleGraph): vertices in cycles (#20602) CI: merge `bot_fix_style` actions (#20789) ...
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Prove that any profinite group is limit of finite groups.