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Pull requests: leanprover-community/mathlib4

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Pull requests list

chore: simplify proofs with grind tech debt Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
#41903 opened Jul 18, 2026 by felixpernegger Contributor Loading…
3
feat: sum of derivations lemmas t-ring-theory Ring theory
#41902 opened Jul 18, 2026 by Ljon4ik4 Contributor Loading…
5
chore: fix argument names of MonoidAlgebra.induction_on maintainer-merge A reviewer has approved the changed; awaiting maintainer approval. t-algebra Algebra (groups, rings, fields, etc)
#41900 opened Jul 18, 2026 by plp127 Contributor Loading…
7
feat: RingHom equivalent to AlgHom over Nat or Int t-algebra Algebra (groups, rings, fields, etc)
#41899 opened Jul 18, 2026 by plp127 Contributor Loading…
4
feat(Analysis/Convex): majorization preorder and T-transform decomposition new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-analysis Analysis (normed *, calculus)
#41898 opened Jul 18, 2026 by marcinbugaj Loading…
2
chore(RingTheory/Localization/Integer): fix typo in theorem name easy < 20s of review time. See the lifecycle page for guidelines. maintainer-merge A reviewer has approved the changed; awaiting maintainer approval. t-algebra Algebra (groups, rings, fields, etc) t-ring-theory Ring theory
#41897 opened Jul 18, 2026 by tb65536 Contributor Loading…
4
chore: replace simp_all with simp whenever possible
#41896 opened Jul 18, 2026 by felixpernegger Contributor Loading…
16
feat(Tactic): automatic positivity attribute LLM-generated PRs with substantial input from LLMs - review accordingly WIP Work in progress
#41895 opened Jul 18, 2026 by BoltonBailey Collaborator • Draft
1
feat: a linear map which is a local embedding is an embedding t-topology Topological spaces, uniform spaces, metric spaces, filters WIP Work in progress
#41893 opened Jul 18, 2026 by ADedecker Member • Draft
1
feat: mapOfCompatibleSMul is the same map independently of S t-algebra Algebra (groups, rings, fields, etc)
#41892 opened Jul 18, 2026 by Ljon4ik4 Contributor Loading…
1
feat: Fubini theorem for vector measures t-measure-probability Measure theory / Probability theory
#41891 opened Jul 18, 2026 by sgouezel Contributor Loading…
2
feat: semidirect product of Lie algebras - adding simp lemmas for toProd.symm and toProdl.symm t-algebra Algebra (groups, rings, fields, etc)
#41890 opened Jul 18, 2026 by Ljon4ik4 Contributor Loading…
2
chore: corrected namespace of ker_mapOfCompatibleSMul in the docstring of mapOfCompatibleSMul_surjective t-algebra Algebra (groups, rings, fields, etc)
#41889 opened Jul 18, 2026 by Ljon4ik4 Contributor Loading…
1
feat: lemmas showing properties of ofDerivation added t-algebra Algebra (groups, rings, fields, etc)
#41887 opened Jul 18, 2026 by Ljon4ik4 Contributor Loading…
1
chore(Tactic/Translate): remove the deprecated @[to_additive "docstring"] syntax maintainer-merge A reviewer has approved the changed; awaiting maintainer approval. t-meta Tactics, attributes or user commands
#41886 opened Jul 18, 2026 by gasparattila Contributor Loading…
3
feat(Algebra/ModuleCat): injective dimension in linear equiv t-algebra Algebra (groups, rings, fields, etc)
#41885 opened Jul 18, 2026 by Thmoas-Guan Collaborator Loading…
1
feat: the delta distribution is induced by the dirac measure blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) large-import Automatically added label for PRs with a significant increase in transitive imports t-analysis Analysis (normed *, calculus)
#41884 opened Jul 18, 2026 by luigi-massacci Collaborator Loading…
1 task
3
feat(Tactic/Translate): warn when adding a docstring to an existing declaration blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) t-meta Tactics, attributes or user commands
#41883 opened Jul 18, 2026 by gasparattila Contributor Loading…
1 task
5
feat(Data/List): decidability of HasPeriod and periods of repeated lists LLM-generated PRs with substantial input from LLMs - review accordingly new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-data Data (lists, quotients, numbers, etc)
#41882 opened Jul 18, 2026 by theebayuser Loading…
3
feat(CategoryTheory/ObjectProperty): define objects admitting finite resolutions by objects satisfying P : ObjectProperty C t-category-theory Category theory
#41880 opened Jul 18, 2026 by mbkybky Collaborator Loading…
1
feat(Combinatorics/SimpleGraph/Hamiltonian): the Bondy-Chvátal theorem blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) t-combinatorics Combinatorics
#41879 opened Jul 18, 2026 by SnirBroshi Collaborator Loading…
2 tasks
3
chore(Order): fix defs with underscore in their names
#41878 opened Jul 18, 2026 by felixpernegger Contributor Loading…
1
feat(Algebra/Order/Floor/Ring): positivity for Int.fract LLM-generated PRs with substantial input from LLMs - review accordingly t-algebra Algebra (groups, rings, fields, etc) t-meta Tactics, attributes or user commands
#41877 opened Jul 18, 2026 by BoltonBailey Collaborator Loading…
1
feat (Linter/Header): add config for custom copyright t-linter Linter
#41876 opened Jul 17, 2026 by oliver-butterley Collaborator • Draft
1
chore: eta reduce in proofs
#41875 opened Jul 17, 2026 by felixpernegger Contributor • Draft
6
ProTip! What’s not been updated in a month: updated:<2026-06-18.