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Pull requests: leanprover-community/mathlib4

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Pull requests list

feat(LinearAlgebra/SpecialLinearGroup/Simple): simplicity of the projective special linear group. 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 large-import Automatically added label for PRs with a significant increase in transitive imports
#33916 opened Jan 13, 2026 by AntoineChambert-Loir Loading…
11 tasks
feat: irreducible components of schemes awaiting-author A reviewer has asked the author a question or requested changes. large-import Automatically added label for PRs with a significant increase in transitive imports t-algebra Algebra (groups, rings, fields, etc) t-algebraic-geometry Algebraic geometry t-ring-theory Ring theory WIP Work in progress
#33915 opened Jan 13, 2026 by tb65536 Loading…
fix(Tactic/Linter): support Verso docstrings in header style linter delegated This pull request has been delegated to the PR author (or occasionally another non-maintainer). t-linter Linter
#33914 opened Jan 13, 2026 by Vierkantor Loading…
feat(Data/Set/Pairwise): the {f i} are pairwise disjoint iff f is injective delegated This pull request has been delegated to the PR author (or occasionally another non-maintainer). t-data Data (lists, quotients, numbers, etc)
#33913 opened Jan 13, 2026 by YaelDillies Loading…
chore: golf using grind, reduce compilation time and imports ready-to-merge This PR has been sent to bors.
#33912 opened Jan 13, 2026 by euprunin Loading…
feat(Data/Set/Finite): make simp more powerful t-data Data (lists, quotients, numbers, etc)
#33911 opened Jan 13, 2026 by YaelDillies Loading…
feat(Data/List): a :: l ~r l.concat a awaiting-author A reviewer has asked the author a question or requested changes. easy < 20s of review time. See the lifecycle page for guidelines. t-data Data (lists, quotients, numbers, etc)
#33910 opened Jan 13, 2026 by YaelDillies Loading…
feat(SetTheory/Cardinal): more lemmas about ENat
#33909 opened Jan 13, 2026 by YaelDillies Loading…
perf: set IsScalarTower.right to high priority t-algebra Algebra (groups, rings, fields, etc)
#33908 opened Jan 13, 2026 by erdOne Draft
feat(Asymptotics): Show that f =O[atTop] g from a recurrence relation t-analysis Analysis (normed *, calculus)
#33907 opened Jan 13, 2026 by dupuisf Loading…
feat(RingTheory/SimpleModule): Jacobson density theorem delegated This pull request has been delegated to the PR author (or occasionally another non-maintainer). t-ring-theory Ring theory
#33906 opened Jan 13, 2026 by alreadydone Loading…
chore(Order/RelClasses): name arguments of recursors t-order Order theory
#33905 opened Jan 13, 2026 by plp127 Loading…
refactor(Algebra): weaken NormalizationMonoid 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) t-ring-theory Ring theory WIP Work in progress
#33904 opened Jan 12, 2026 by alreadydone Loading…
1 task
feat(RingTheory): local structure of monogenic unramified algebras large-import Automatically added label for PRs with a significant increase in transitive imports t-ring-theory Ring theory
#33903 opened Jan 12, 2026 by erdOne Loading…
chore: golf Real.exists_floor easy < 20s of review time. See the lifecycle page for guidelines. FLT part of the ongoing formalization of Fermat's Last Theorem ready-to-merge This PR has been sent to bors. t-data Data (lists, quotients, numbers, etc)
#33902 opened Jan 12, 2026 by Ruben-VandeVelde Loading…
feat(LinearAlgebra/Span): add inter/union/sInf/sSup lemmas for Submodule.span 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)
#33901 opened Jan 12, 2026 by martinwintermath Loading…
fix: generalize TransvectionStruct.det_toMatrix_prod to CommRing easy < 20s of review time. See the lifecycle page for guidelines. FLT part of the ongoing formalization of Fermat's Last Theorem ready-to-merge This PR has been sent to bors. t-algebra Algebra (groups, rings, fields, etc)
#33900 opened Jan 12, 2026 by Ruben-VandeVelde Loading…
style: fix whitespace delegated This pull request has been delegated to the PR author (or occasionally another non-maintainer). ready-to-merge This PR has been sent to bors.
#33899 opened Jan 12, 2026 by grunweg Loading…
feat(AlgebraicGeometry): relative gluing t-algebraic-geometry Algebraic geometry
#33898 opened Jan 12, 2026 by chrisflav Loading…
feat(HereditarilyLindelof): review and expand API t-topology Topological spaces, uniform spaces, metric spaces, filters
#33897 opened Jan 12, 2026 by ADedecker Loading…
refactor(Geometry/Manifold): split long file ChartedSpace.lean t-differential-geometry Manifolds etc tech debt Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
#33896 opened Jan 12, 2026 by loefflerd Loading…
feat(Computability/Primrec): add list_take, list_drop, list_modify, and list_set new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-computability Computability theory (TMs, DFAs, languages, grammars, etc)
#33895 opened Jan 12, 2026 by jessealama Loading…
chore: move Archimedean to a new Defs file t-algebra Algebra (groups, rings, fields, etc)
#33894 opened Jan 12, 2026 by vihdzp Loading…
feat(NumberTheory/Height): heights of tuples and finsupps t-number-theory Number theory (also use t-algebra or t-analysis to specialize)
#33893 opened Jan 12, 2026 by MichaelStollBayreuth Loading…
feat(Algebra/Module/Submodule/Pointwise): add smul_iSup' delegated This pull request has been delegated to the PR author (or occasionally another non-maintainer). t-algebra Algebra (groups, rings, fields, etc) t-ring-theory Ring theory
#33892 opened Jan 12, 2026 by tb65536 Loading…
ProTip! Updated in the last three days: updated:>2026-01-10.