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Pull requests: leanprover-community/mathlib4

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Pull requests list

feat: ContinuousAlgEquiv.toContinuousLinearEquiv awaiting-author A reviewer has asked the author a question or requested changes. FLT part of the ongoing formalization of Fermat's Last Theorem t-topology Topological spaces, uniform spaces, metric spaces, filters
#34166 opened Jan 20, 2026 by bwangpj Loading…
2
feat(Archive/Imo/Imo2012Q5): IMO 2012 Q5 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
#34165 opened Jan 20, 2026 by zcyemi Loading…
6 tasks
2
feat(Geometry/Euclidean/Sphere): define arcs on spheres t-euclidean-geometry Affine and axiomatic geometry
#34164 opened Jan 20, 2026 by Scarlett-le Loading…
1
feat: LinearEquiv.chooseBasis_piScalarRight FLT part of the ongoing formalization of Fermat's Last Theorem t-algebra Algebra (groups, rings, fields, etc)
#34163 opened Jan 20, 2026 by bwangpj Loading…
1
feat: ContinuousMulEquiv.units_map large-import Automatically added label for PRs with a significant increase in transitive imports t-topology Topological spaces, uniform spaces, metric spaces, filters
#34162 opened Jan 20, 2026 by bwangpj Loading…
2
feat: lemmas for RestrictedProduct.inclusion FLT part of the ongoing formalization of Fermat's Last Theorem t-topology Topological spaces, uniform spaces, metric spaces, filters
#34161 opened Jan 20, 2026 by bwangpj Loading…
1
feat: MeasureTheory.mulEquivHaarChar_symm t-measure-probability Measure theory / Probability theory
#34160 opened Jan 20, 2026 by bwangpj Loading…
1
feat(Geometry/Euclidean/Similarity): Add Triangle similarity on oangle new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-euclidean-geometry Affine and axiomatic geometry
#34159 opened Jan 20, 2026 by wangying11123 Loading…
1
refactor(QuadraticForm/Complex): generalize to algebraically closed field large-import Automatically added label for PRs with a significant increase in transitive imports t-algebra Algebra (groups, rings, fields, etc)
#34158 opened Jan 20, 2026 by wwylele Loading…
1
feat(Geometry/Euclidean/Altitude): add inner_vsub_altitudeFoot_vsub_altitudeFoot_eq_zero t-euclidean-geometry Affine and axiomatic geometry
#34157 opened Jan 20, 2026 by zcyemi Loading…
1
feat(Analysis/Convex/Between): add lemmas on convex combination of mem simplex interior blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot)
#34156 opened Jan 20, 2026 by zcyemi Loading…
1 task
2
feat(Geometry/Euclidean/Triangle): add altitudeFoot lies strictly between endpoints for an obtuse angle t-euclidean-geometry Affine and axiomatic geometry
#34155 opened Jan 20, 2026 by zcyemi Loading…
2
chore: golf using grind and add grind annotations
#34154 opened Jan 19, 2026 by euprunin Loading…
3
feat: add grind_pattern for Finset.card_{empty,singleton} t-data Data (lists, quotients, numbers, etc)
#34153 opened Jan 19, 2026 by euprunin Loading…
3
feat(UniformSpace/Closeds): add DiscreteUniformity instances t-topology Topological spaces, uniform spaces, metric spaces, filters
#34152 opened Jan 19, 2026 by gasparattila Loading…
1
feat(Topology/Sets): product of Closeds t-topology Topological spaces, uniform spaces, metric spaces, filters
#34151 opened Jan 19, 2026 by gasparattila Loading…
1
feat: add @[grind ext] attribute to DFinsupp.ext t-data Data (lists, quotients, numbers, etc)
#34150 opened Jan 19, 2026 by euprunin Loading…
1
feat(Geometry/Euclidean): add converse of Thales' theorem in 2D t-euclidean-geometry Affine and axiomatic geometry
#34149 opened Jan 19, 2026 by Scarlett-le Loading…
1
feat: refactor ring to extract common behaviour with algebra merge-conflict The PR has a merge conflict with master, and needs manual merging. (this label is managed by a bot) t-meta Tactics, attributes or user commands
#34148 opened Jan 19, 2026 by FLDutchmann • Draft
feat(Topology/Algebra/MulAction): add top_smul_nhds_zero
#34146 opened Jan 19, 2026 by urkud Loading…
1
feat(CategoryTheory): the yoneda embedding to sheaves preserves disjoint coproducts t-category-theory Category theory
#34145 opened Jan 19, 2026 by chrisflav Loading…
1
feat(Data/ENat): add lemma ENat.iInf_eq_coe_iff awaiting-author A reviewer has asked the author a question or requested changes. t-data Data (lists, quotients, numbers, etc)
#34144 opened Jan 19, 2026 by IvanRenison Loading…
12
chore: make DyckWord definitions public t-combinatorics Combinatorics
#34143 opened Jan 19, 2026 by Parcly-Taxel Loading…
1
feat(Combinatorics/SimpleGraph/Acyclic): finite trees have at least two degree-one vertices large-import Automatically added label for PRs with a significant increase in transitive imports new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-combinatorics Combinatorics
#34141 opened Jan 19, 2026 by gululu996-ui Loading…
2
feat(RingTheory/IsPrimary): connection between IsPrimary and radicals of colons t-algebra Algebra (groups, rings, fields, etc) t-ring-theory Ring theory
#34140 opened Jan 19, 2026 by tb65536 Loading…
1
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