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Pull requests: leanprover-community/mathlib4

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Pull requests list

feat: add empty_eq_image simp lemmas t-data Data (lists, quotients, numbers, etc)
#33363 opened Dec 28, 2025 by BoltonBailey Loading…
feat: weaken assumptions in Schwarz lemma t-analysis Analysis (normed *, calculus)
#33362 opened Dec 28, 2025 by urkud Loading…
feat(RingTheory/Nakayama): refine Nakayama's lemma 00DV (8) new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-ring-theory Ring theory
#33361 opened Dec 28, 2025 by sun123zxy Loading…
feat(Algebra/Homology): functoriality of extMk with respect to the injective resolution blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) t-category-theory Category theory WIP Work in progress
#33360 opened Dec 28, 2025 by joelriou Loading…
2 tasks
feat(Algebra/Module/SpanRank): add comparing lemmas for span rank 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)
#33359 opened Dec 28, 2025 by sun123zxy Loading…
feat(Algebra/Homology): functoriality of ProjectiveResolution.extMk blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) t-category-theory Category theory WIP Work in progress
#33358 opened Dec 28, 2025 by joelriou Loading…
1 task
feat: hasDetPlusMinusOne_iff_abs_det
#33356 opened Dec 28, 2025 by Ruben-VandeVelde Loading…
feat(Combinatorics/SimpleGraph/Connectivity): define vertex connectivity new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-combinatorics Combinatorics
#33355 opened Dec 28, 2025 by 0xTerencePrime Loading…
chore: make reverse direction of IsScalarTower.algebraMap_eq a simp lemma t-algebra Algebra (groups, rings, fields, etc) WIP Work in progress
#33353 opened Dec 28, 2025 by ocfnash Loading…
feat(Analysis/InnerProductSpace/Positive): f.symm.IsPositive iff f.IsPositive easy < 20s of review time. See the lifecycle page for guidelines. t-analysis Analysis (normed *, calculus)
#33352 opened Dec 28, 2025 by themathqueen Loading…
feat(Algebra/Order/AddGroupWithTop): more monotonicity/injectivity lemmas maintainer-merge A reviewer has approved the changed; awaiting maintainer approval. t-algebra Algebra (groups, rings, fields, etc)
#33349 opened Dec 28, 2025 by vihdzp Loading…
feat(LinearAlgebra/Transvection): characterization of transvections among dilatransvections blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) t-algebra Algebra (groups, rings, fields, etc)
#33348 opened Dec 27, 2025 by AntoineChambert-Loir Loading…
1 task
doc(Algebra/Order/ArchimedeanClass): mention "commensurate" in docstring documentation Improvements or additions to documentation easy < 20s of review time. See the lifecycle page for guidelines. t-algebra Algebra (groups, rings, fields, etc) t-order Order theory
#33346 opened Dec 27, 2025 by vihdzp Loading…
feat: ArchimedeanClass.mk_div maintainer-merge A reviewer has approved the changed; awaiting maintainer approval. t-algebra Algebra (groups, rings, fields, etc)
#33345 opened Dec 27, 2025 by vihdzp Loading…
feat: Real.{ball_zero_eq_Ioo,closedBall_zero_eq_Icc} t-topology Topological spaces, uniform spaces, metric spaces, filters
#33344 opened Dec 27, 2025 by Ruben-VandeVelde Loading…
feat: more lemmas on ArchimedeanClass.stdPart maintainer-merge A reviewer has approved the changed; awaiting maintainer approval. t-algebra Algebra (groups, rings, fields, etc)
#33343 opened Dec 27, 2025 by vihdzp Loading…
chore(Topology/Algebra/Module/LinearMap): deprecate duplicate lemmas t-topology Topological spaces, uniform spaces, metric spaces, filters
#33341 opened Dec 27, 2025 by themathqueen Loading…
feat: small lemmas about LeftInverse and image/preimage t-data Data (lists, quotients, numbers, etc)
#33339 opened Dec 27, 2025 by Ruben-VandeVelde Loading…
chore(Analysis/InnerProductSpace/Projection/Submodule): rename lemmas easy < 20s of review time. See the lifecycle page for guidelines. t-analysis Analysis (normed *, calculus)
#33337 opened Dec 27, 2025 by themathqueen Loading…
WIP WIP Work in progress
#33336 opened Dec 27, 2025 by fbarroero Loading…
ProTip! Exclude everything labeled bug with -label:bug.