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Pull requests: leanprover-community/mathlib4

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Pull requests list

feat(Topology/Order): separability is hereditary for linearly ordered topological spaces t-topology Topological spaces, uniform spaces, metric spaces, filters
#41918 opened Jul 19, 2026 by CoolRmal Contributor Loading…
1
Feat/projective seminorm family new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community!
#41917 opened Jul 19, 2026 by mpacholski • Draft
2
feat(Topology): add Homeomorph.Set.iUnion t-topology Topological spaces, uniform spaces, metric spaces, filters
#41916 opened Jul 19, 2026 by peabrainiac Collaborator Loading…
1
feat(Data/List): infixes, the enumerator of contiguous factors 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)
#41915 opened Jul 19, 2026 by theebayuser Loading…
3
feat(Analysis/Normed): bound finite convex combinations 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-analysis Analysis (normed *, calculus)
#41914 opened Jul 19, 2026 by Qinghev Contributor Loading…
3
chore(Data/Set): move lemmas from Set.Disjoint to Disjoint t-data Data (lists, quotients, numbers, etc)
#41913 opened Jul 19, 2026 by peabrainiac Collaborator Loading…
1
chore: fix various odd indentations
#41912 opened Jul 19, 2026 by felixpernegger Contributor Loading…
1
feat(FieldTheory): implement Artin-Schreier extensions, Artin-Schreier theorem 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)
#41911 opened Jul 19, 2026 by kedlaya Loading…
11
feat(Analysis/Normed/Affine): mapping dist with homothety t-analysis Analysis (normed *, calculus)
#41910 opened Jul 19, 2026 by wwylele Collaborator Loading…
1
feat(FieldTheory): field equivalences for bot subfield t-algebra Algebra (groups, rings, fields, etc)
#41909 opened Jul 19, 2026 by wwylele Collaborator Loading…
5
feat: make NegZeroClass and InvOneClass mixins
#41907 opened Jul 18, 2026 by Rob23oba Collaborator Loading…
1
feat: a Hilbert Basis is a (unconditional) Schauder basis 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-analysis Analysis (normed *, calculus)
#41906 opened Jul 18, 2026 by SofiaSL Loading…
6
feat(FieldTheory): relrank lemma about sup LLM-generated PRs with substantial input from LLMs - review accordingly t-algebra Algebra (groups, rings, fields, etc)
#41905 opened Jul 18, 2026 by wwylele Collaborator Loading…
3
feat(RingTheory/KrullDimension): add Krull dimension preservation under injective integral extensions new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-ring-theory Ring theory
#41904 opened Jul 18, 2026 by rshlyakh Contributor Loading…
1 task
11
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…
8
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…
5
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…
3
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…
17
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
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