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Pull requests: leanprover-community/mathlib4

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feat(Algebra/Category/ModuleCat/Presheaf): the adjunction between colimitFunctor and constFunctor t-algebra Algebra (groups, rings, fields, etc) t-category-theory Category theory
#37662 opened Apr 5, 2026 by joelriou Loading…
feat(Algebra/Lie/Sl2): add lemma exists_primitiveVector large-import Automatically added label for PRs with a significant increase in transitive imports new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-algebra Algebra (groups, rings, fields, etc)
#37661 opened Apr 5, 2026 by pion2024 Loading…
feat(MvPolynomial): add Hasse derivatives new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community!
#37660 opened Apr 5, 2026 by eliasjudin Loading…
feat(AlgebraicTopology): relative singular homology
#37659 opened Apr 5, 2026 by erdOne Loading…
chore(AlgebraicTopology): rename SingularHomology.HomotopyInvarianceTopCat blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) file-removed A Lean module was (re)moved without a `deprecated_module` annotation t-algebraic-topology Algebraic topology WIP Work in progress
#37658 opened Apr 5, 2026 by joelriou Loading…
1 task
chore(MeasureTheory/Measure/MeasureSpace): reduce privateInPublic t-measure-probability Measure theory / Probability theory tech debt Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
#37657 opened Apr 5, 2026 by Komyyy Loading…
feat(AlgebraicTopology): simplicial homology file-removed A Lean module was (re)moved without a `deprecated_module` annotation t-algebraic-topology Algebraic topology
#37656 opened Apr 5, 2026 by joelriou Loading…
chore: expand docstrings to explain the meaning of C^n and C^ω delegated This pull request has been delegated to the PR author (or occasionally another non-maintainer). t-differential-geometry Manifolds etc
#37655 opened Apr 5, 2026 by sgouezel Loading…
feat(ProbabilityTheory/MeasureTheorey): Add Coupling lemma t-measure-probability Measure theory / Probability theory
#37652 opened Apr 5, 2026 by yuanyi-350 Loading…
feat(Data): add theorem Finset.image_eq_iff_eq_preimage t-data Data (lists, quotients, numbers, etc)
#37649 opened Apr 4, 2026 by IvanRenison Loading…
chore: make argument in bddAbove_of_small implicit awaiting-CI This PR does not pass CI yet. This label is automatically removed once it does. t-set-theory Set theory
#37648 opened Apr 4, 2026 by vihdzp Loading…
feat(Logic): surjective embeddings are equivs t-logic Logic (model theory, etc)
#37646 opened Apr 4, 2026 by SnirBroshi Loading…
feat(Order/Causal): add Causal ordering for stream functions new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-order Order theory
#37644 opened Apr 4, 2026 by matthunz Draft
feat(CStarAlgebra): x ↦ x ^ p is operator concave for p ∈ [0, 1] t-analysis Analysis (normed *, calculus)
#37643 opened Apr 4, 2026 by dupuisf Loading…
chore(Combinatorics/SimpleGraph): tidy various files t-combinatorics Combinatorics
#37642 opened Apr 4, 2026 by SnirBroshi Loading…
feat(Analysis/Calculus/FDeriv): add fderiv_apply simp lemmas awaiting-author A reviewer has asked the author a question or requested changes. easy < 20s of review time. See the lifecycle page for guidelines. new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-analysis Analysis (normed *, calculus)
#37637 opened Apr 4, 2026 by IlPreteRosso Loading…
chore(Analysis/Analytic): tag ofScalars_norm_eq_mul with simp easy < 20s of review time. See the lifecycle page for guidelines. t-analysis Analysis (normed *, calculus)
#37635 opened Apr 4, 2026 by vasnesterov Loading…
chore(CI): check all lean scripts build successfully blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) CI Modifies the continuous integration setup or other automation
#37634 opened Apr 4, 2026 by grunweg Loading…
1 task
feat(MvPowerSeries): add some equivs and lemmas large-import Automatically added label for PRs with a significant increase in transitive imports t-ring-theory Ring theory
#37633 opened Apr 4, 2026 by WenrongZou Loading…
feat: add Function.prod and Function.diag t-logic Logic (model theory, etc)
#37631 opened Apr 4, 2026 by linesthatinterlace Loading…
feat(AlgebraicTopology): homology in degree 0 blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) t-algebraic-topology Algebraic topology WIP Work in progress
#37630 opened Apr 4, 2026 by joelriou Loading…
3 tasks
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