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Pull requests: leanprover-community/mathlib4
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feat(GroupTheory/SpecificGroups/Cyclic): comparison and index of subgroups generated by powers
t-group-theory
Group theory
#42754
opened Aug 14, 2026 by
xroblot
Collaborator
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refactor: redefine The PR has a merge conflict with master, and needs manual merging. (this label is managed by a bot)
spectralRadius in terms of quasispectrum
merge-conflict
#42753
opened Aug 13, 2026 by
j-loreaux
Contributor
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fix(Cache): give each cache process its own temporary file names
CI
Modifies the continuous integration setup or other automation
#42752
opened Aug 13, 2026 by
kim-em
Contributor
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chore(Algebra/QuadraticAlgebra): rename map/mapEquiv to changeGenerator
t-algebra
Algebra (groups, rings, fields, etc)
#42751
opened Aug 13, 2026 by
xroblot
Collaborator
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feat(Topology): generalise IsometricSmul to This PR depends on another PR (this label is automatically managed by a bot)
WeakPseudoEMetricSpace and friends
blocked-by-other-PR
#42750
opened Aug 13, 2026 by
felixpernegger
Contributor
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1 task
feat(RingTheory/Bialgebra): expose (Add)MonoidAlgebra.liftMulEquiv
t-ring-theory
Ring theory
#42749
opened Aug 13, 2026 by
kim-em
Contributor
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chore(LinearAlgebra): tidy markdown headers
t-algebra
Algebra (groups, rings, fields, etc)
#42748
opened Aug 13, 2026 by
harahu
Contributor
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feat(Topology): generalise Dilation to This PR depends on another PR (this label is automatically managed by a bot)
LLM-generated
PRs with substantial input from LLMs - review accordingly
WeakPseudoEMetricSpace and friends
blocked-by-other-PR
#42747
opened Aug 13, 2026 by
felixpernegger
Contributor
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1 task
chore: remove outdated adaptation notes after #42161
t-category-theory
Category theory
tech debt
Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
#42745
opened Aug 13, 2026 by
JovanGerb
Contributor
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feat(Analysis/InnerProductSpace): complexification of Hilbert spaces
t-analysis
Analysis (normed *, calculus)
tech debt
Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
#42744
opened Aug 13, 2026 by
themathqueen
Collaborator
•
Draft
chore(Tactic): mark two runtime-only imports as PRs with substantial input from LLMs - review accordingly
maintainer-merge
A reviewer has approved the changed; awaiting maintainer approval.
t-meta
Tactics, attributes or user commands
shake: keep
LLM-generated
#42743
opened Aug 13, 2026 by
bryangingechen
Contributor
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feat: the set of Fredholm operators between two Banach spaces is open
blocked-by-other-PR
This PR depends on another PR (this label is automatically managed by a bot)
t-topology
Topological spaces, uniform spaces, metric spaces, filters
#42742
opened Aug 13, 2026 by
ADedecker
Member
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1 task
feat(Topology): generalise Isometry to PRs with substantial input from LLMs - review accordingly
t-topology
Topological spaces, uniform spaces, metric spaces, filters
WeakPseudoEMetricSpace and friends
LLM-generated
#42741
opened Aug 13, 2026 by
felixpernegger
Contributor
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1 task
chore: mark Algebraic geometry
tech debt
Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
AlgebraicGeometry.PrimeSpectrum.Top as implicit_reducible
t-algebraic-geometry
#42740
opened Aug 13, 2026 by
JovanGerb
Contributor
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chore(Order/Interval): define Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
Unique (Iic 0) directly, drop a defeq option in Traj
tech debt
#42739
opened Aug 13, 2026 by
FrankieNC
Collaborator
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chore(Data/Finset): mark Measure theory / Probability theory
tech debt
Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
Equiv.restrictPreimageFinset implicit_reducible
t-measure-probability
#42738
opened Aug 13, 2026 by
FrankieNC
Collaborator
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feat(Algebra/Order/Kleene): add Kleene algebra instances for MulOppos…
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)
#42737
opened Aug 13, 2026 by
Jack1320
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chore: mark Category theory
tech debt
Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
Triangle.mk as implicit_reducible
t-category-theory
#42736
opened Aug 13, 2026 by
JovanGerb
Contributor
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chore(Probability/ProbabilityMassFunction): remove defeq option in Monad
t-measure-probability
Measure theory / Probability theory
tech debt
Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
#42735
opened Aug 13, 2026 by
FrankieNC
Collaborator
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chore(Probability/Martingale): remove defeq options in OptionalStopping
t-measure-probability
Measure theory / Probability theory
tech debt
Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
#42734
opened Aug 13, 2026 by
FrankieNC
Collaborator
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chore(Probability): remove 15/24 Measure theory / Probability theory
tech debt
Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
backward.isDefEq.respectTransparency options
t-measure-probability
#42733
opened Aug 13, 2026 by
FrankieNC
Collaborator
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feat(TacticAnalysis): suggest Tactics, attributes or user commands
rwa for rw followed by assumption
t-meta
#42732
opened Aug 13, 2026 by
CoolRmal
Contributor
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feat(LinearAlgebra/Dimension): add corank
t-algebra
Algebra (groups, rings, fields, etc)
#42731
opened Aug 13, 2026 by
martinwintermath
Contributor
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chore: mark Category theory
tech debt
Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
Cat.of as implicit_reducible
t-category-theory
#42730
opened Aug 13, 2026 by
JovanGerb
Contributor
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feat(Order/GaloisConnection): add variant of This pull request has been delegated to the PR author (or occasionally another non-maintainer).
t-order
Order theory
l_sSup and l_sInf
delegated
#42729
opened Aug 13, 2026 by
martinwintermath
Contributor
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