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Pull requests: leanprover-community/mathlib4
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chore: fix duplicated lemma
t-measure-probability
Measure theory / Probability theory
#40870
opened Jun 21, 2026 by
sgouezel
Contributor
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refactor(Topology): add deprecation module for This PR depends on another PR (this label is automatically managed by a bot)
t-topology
Topological spaces, uniform spaces, metric spaces, filters
LocPathConnected
blocked-by-other-PR
#40869
opened Jun 21, 2026 by
felixpernegger
Contributor
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1 task
refactor(Topology): rename A Lean module was (re)moved without a `deprecated_module` annotation
t-topology
Topological spaces, uniform spaces, metric spaces, filters
LocPathConnected
file-removed
#40868
opened Jun 21, 2026 by
felixpernegger
Contributor
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chore: remove stray Subtype.eq_iff declaration
maintainer-merge
A reviewer has approved the changed; awaiting maintainer approval.
t-topology
Topological spaces, uniform spaces, metric spaces, filters
#40867
opened Jun 21, 2026 by
wwylele
Collaborator
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feat(FieldTheory/Galois/IsGaloisGroup): add IsGaloisGroup.of_isScalarTower' for towers of domains
blocked-by-other-PR
This PR depends on another PR (this label is automatically managed by a bot)
t-ring-theory
Ring theory
#40866
opened Jun 21, 2026 by
xroblot
Collaborator
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2 tasks
refactor(Algebra/Module/Equiv): update name and refactor API ofLinearEquiv
t-algebra
Algebra (groups, rings, fields, etc)
#40865
opened Jun 21, 2026 by
TJHeeringa
Contributor
•
Draft
feat(RingTheory/Localization/FractionRing): add IsFractionRing.fixingSubgroup_range_algebraMap
t-ring-theory
Ring theory
#40864
opened Jun 21, 2026 by
xroblot
Collaborator
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feat(Algebra/Homology): the injective derivability structure
t-category-theory
Category theory
WIP
Work in progress
#40863
opened Jun 21, 2026 by
joelriou
Contributor
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chore(CategoryTheory/Comma/Arrow): use Category theory
to_dual
t-category-theory
#40862
opened Jun 21, 2026 by
JovanGerb
Contributor
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doc: add wikidata attributes
documentation
Improvements or additions to documentation
LLM-generated
PRs with substantial input from LLMs - review accordingly
#40861
opened Jun 21, 2026 by
Deicyde
Contributor
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feat(Algebra/Group/GreensRelations): add equivalence classes and posets for Green's relations
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-algebra
Algebra (groups, rings, fields, etc)
#40860
opened Jun 21, 2026 by
ReemMelamed
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1 task
perf(RingTheory/Kaehler/JacobiZariski): remove useless instances
t-ring-theory
Ring theory
#40858
opened Jun 21, 2026 by
faenuccio
Contributor
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feat(RingTheory/Radical): radical of principal ideals in a UFD
large-import
Automatically added label for PRs with a significant increase in transitive imports
t-ring-theory
Ring theory
#40857
opened Jun 21, 2026 by
BryceT233
Contributor
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feat(Data/ENNReal): add Data (lists, quotients, numbers, etc)
sum_div
t-data
#40855
opened Jun 20, 2026 by
NoahW314
Contributor
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chore(NumberTheory/PrimeCounting): minor golf
new-contributor
This PR was made by a contributor with at most 5 merged PRs. Welcome to the community!
t-number-theory
Number theory (also use t-algebra or t-analysis to specialize)
#40854
opened Jun 20, 2026 by
teorth
Contributor
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chore: fix bad indentation
t-algebra
Algebra (groups, rings, fields, etc)
#40853
opened Jun 20, 2026 by
grunweg
Contributor
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feat(MeasureTheory/Integral/MeanInequalities): strict Hölder's inequality for Lebesgue integrals
t-measure-probability
Measure theory / Probability theory
#40851
opened Jun 20, 2026 by
SnirBroshi
Collaborator
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chore: update Mathlib dependencies 2026-06-21
auto-merge-after-CI
Please do not add manually. Requests for a bot to merge automatically once CI is done.
dependency-bump
This PR bumps the version of an upstream dependency (but not toolchain).
#40849
opened Jun 20, 2026 by
mathlib-update-dependencies
Bot
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WIP
large-import
Automatically added label for PRs with a significant increase in transitive imports
t-ring-theory
Ring theory
#40848
opened Jun 20, 2026 by
fbarroero
Collaborator
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feat(Analysis/SpecialFunctions/Log/InvLog): add simp lemma form of deriv_inv_log
new-contributor
This PR was made by a contributor with at most 5 merged PRs. Welcome to the community!
#40847
opened Jun 20, 2026 by
teorth
Contributor
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feat(Analysis/InnerProductSpace/TensorProduct): add TensorProduct.congrL
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-topology
Topological spaces, uniform spaces, metric spaces, filters
#40846
opened Jun 20, 2026 by
TJHeeringa
Contributor
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2 tasks
feat(FinitelyPresentedGroup): quotient of a finitely group by a subgroup which is finitely generated under normal closure is finitely presented
new-contributor
This PR was made by a contributor with at most 5 merged PRs. Welcome to the community!
t-group-theory
Group theory
#40845
opened Jun 20, 2026 by
laredo02
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feat(Algebra/Divisibility/Basic): introduce right division (RightDvd)
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)
#40843
opened Jun 20, 2026 by
ReemMelamed
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feat(Topology/Algebra): add ContinuousLinearEquiv.ofContinuousLinearMap
awaiting-author
A reviewer has asked the author a question or requested changes.
t-topology
Topological spaces, uniform spaces, metric spaces, filters
#40841
opened Jun 20, 2026 by
TJHeeringa
Contributor
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