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Pull requests: leanprover-community/mathlib4

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Pull requests list

chore(Analysis/InnerProductSpace): fix eigenvalue_pos_of_pos t-analysis Analysis (normed *, calculus)
#42929 opened Aug 19, 2026 by mcdoll Member Loading…
feat(RingTheory/Ideal/Maps): add lemma Ideal.map_eq_image_of_surjective easy < 20s of review time. See the lifecycle page for guidelines. t-ring-theory Ring theory
#42928 opened Aug 19, 2026 by NoahW314 Contributor Loading…
feat(Algebra/Group): prod and pi instances for IsDedekindFinite easy < 20s of review time. See the lifecycle page for guidelines. t-algebra Algebra (groups, rings, fields, etc)
#42927 opened Aug 19, 2026 by NoahW314 Contributor Loading…
feat(Algebra/Order): add MulLeftMono implies IsDedekindFinite instance
#42926 opened Aug 19, 2026 by NoahW314 Contributor Loading…
refactor(SetTheory/Ordinal): redefine Ordinal.ToType as Shrink (Iio o) tech debt Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
#42925 opened Aug 19, 2026 by dennj Contributor Loading…
chore(MeasureTheory): generalize hypotheses to NullMeasurableSet t-measure-probability Measure theory / Probability theory
#42924 opened Aug 19, 2026 by D-Thomine Collaborator Loading…
feat(FieldTheory/KummerExtension): criterion for X ^ n - C a to be irreducible for even n 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
#42923 opened Aug 18, 2026 by plp127 Contributor Loading…
2 tasks
chore: move a few test files about tactics into MathlibTest/Tactic easy < 20s of review time. See the lifecycle page for guidelines. file-removed A Lean module was (re)moved without a `deprecated_module` annotation
#42922 opened Aug 18, 2026 by joneugster Contributor Loading…
4 tasks done
chore(RingTheory/RamificationInertia/Ramification): reorganize proofs t-algebra Algebra (groups, rings, fields, etc) t-ring-theory Ring theory
#42921 opened Aug 18, 2026 by tb65536 Contributor Loading…
feat(Topology/Algebra/LinearMapCompletion): f.extend toComplL = f.fromCompletion t-topology Topological spaces, uniform spaces, metric spaces, filters
#42920 opened Aug 18, 2026 by themathqueen Collaborator Loading…
feat(NumberTheory/RamificationInertia/Unramified): generalize IsUnramifiedAt.of_liesOver to flat algebras t-algebra Algebra (groups, rings, fields, etc) t-ring-theory Ring theory
#42919 opened Aug 18, 2026 by tb65536 Contributor Loading…
chore: fix minor spacing issues awaiting-zulip There is a Zulip discussion; the author should await and report/implement the decision reached there easy < 20s of review time. See the lifecycle page for guidelines.
#42918 opened Aug 18, 2026 by felixpernegger Contributor Loading…
refactor(CategoryTheory/Limits/Shapes): split up BinaryProducts.lean tech debt Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
#42917 opened Aug 18, 2026 by loefflerd Contributor Loading…
feat(Analysis/Numerical): add (real-valued) bisection method new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-analysis Analysis (normed *, calculus)
#42916 opened Aug 18, 2026 by 0x00b1 Loading…
feat(SheafOfModules): LocallyFreeOfRank t-algebra Algebra (groups, rings, fields, etc)
#42915 opened Aug 18, 2026 by Brian-Nugent Collaborator Draft
feat(Algebra): add zpow_right_injective 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)
#42914 opened Aug 18, 2026 by lman310 Loading…
doc(AlgebraicGeometry): fix docstring about finite presentation t-algebraic-geometry Algebraic geometry
#42913 opened Aug 18, 2026 by alreadydone Contributor Loading…
feat(Topology/GDelta): a completely metrizable subspace of a metrizable space is Gδ blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-topology Topological spaces, uniform spaces, metric spaces, filters
#42912 opened Aug 18, 2026 by justin-palumbo Loading…
1 task
feat(NumberTheory): the Gelfond-Schneider theorem (Hilbert's seventh problem) blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) t-number-theory Number theory (also use t-algebra or t-analysis to specialize)
#42911 opened Aug 18, 2026 by mkaratarakis Contributor Loading…
1 task
feat: add Measure.bind_comm t-measure-probability Measure theory / Probability theory
#42908 opened Aug 18, 2026 by EtienneC30 Member Loading…
fix(autolabel): auto-label PRs touching bors.toml as CI CI Modifies the continuous integration setup or other automation easy < 20s of review time. See the lifecycle page for guidelines.
#42904 opened Aug 18, 2026 by grunweg Contributor Loading…
doc: remove suggestion of self-introduction from new contributor welcome comment 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 RFC Request for comment
#42901 opened Aug 18, 2026 by grunweg Contributor Loading…
1 task
fix: outdated link in new contributor welcome comment CI Modifies the continuous integration setup or other automation easy < 20s of review time. See the lifecycle page for guidelines.
#42900 opened Aug 18, 2026 by grunweg Contributor Loading…
feat: implement DLMF attribute t-meta Tactics, attributes or user commands
#42899 opened Aug 18, 2026 by luigi-massacci Collaborator Loading…
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