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Pull requests: leanprover-community/mathlib4
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feat: Work in progress
GroupWithZero versions of le lemmas
WIP
#34120
opened Jan 19, 2026 by
winstonyin
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feat(Analysis): classical adjacency matrices are quantum adjacency matrices
blocked-by-other-PR
This PR depends on another PR (this label is automatically managed by a bot)
t-analysis
Analysis (normed *, calculus)
#34119
opened Jan 19, 2026 by
themathqueen
•
Draft
1 task
refactor(RingTheory/Ideal/AssociatedPrime/Basic): switch definition over to Algebra (groups, rings, fields, etc)
t-ring-theory
Ring theory
colon
t-algebra
#34118
opened Jan 18, 2026 by
tb65536
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feat(CategoryTheory/Elements): initially small if functor is (co)representable
t-category-theory
Category theory
#34117
opened Jan 18, 2026 by
chrisflav
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feat(AlgebraicGeometry): geometric points induce points on the étale site
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-algebraic-geometry
Algebraic geometry
WIP
Work in progress
#34116
opened Jan 18, 2026 by
chrisflav
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2 tasks
feat(Algebra/Algebra/Subalgebra): generalize iSupLift to T ≤ iSup K
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)
#34114
opened Jan 18, 2026 by
bilichboris
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feat(Algebra/Star/LinearMap): the convolutive intrinsic star ring on linear maps
t-algebra
Algebra (groups, rings, fields, etc)
#34111
opened Jan 18, 2026 by
themathqueen
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feat(LinearAlgebra/BilinearForm): Harmonize definitions of "Nondegenerate"
#34110
opened Jan 18, 2026 by
loefflerd
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feat(NumberTheory/FactorizationProperties): Infinite abundant numbers, then golf
t-number-theory
Number theory (also use t-algebra or t-analysis to specialize)
#34109
opened Jan 18, 2026 by
metakunt
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feat(InformationTheory/Coding): Kraft-McMillan inequality for uniquely decodable codes
new-contributor
This PR was made by a contributor with at most 5 merged PRs. Welcome to the community!
t-measure-probability
Measure theory / Probability theory
#34108
opened Jan 18, 2026 by
elazarg
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feat: map a seminorm along a surjective linear map
blocked-by-other-PR
This PR depends on another PR (this label is automatically managed by a bot)
feat: IsLUB version of [c]sSup_add
blocked-by-other-PR
This PR depends on another PR (this label is automatically managed by a bot)
#34105
opened Jan 18, 2026 by
ADedecker
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1 task
feat: IsLUB versions of [c]sSup_image2_eq_[c]sSup_[c]sSup
t-order
Order theory
#34104
opened Jan 18, 2026 by
ADedecker
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chore(Analysis/InnerProductSpace/Orthogonal): add simp attrib, rename
t-analysis
Analysis (normed *, calculus)
#34103
opened Jan 18, 2026 by
yoh-tanimoto
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feat(Complex/UnitDisc): add Analysis (normed *, calculus)
CanLift
t-analysis
#34102
opened Jan 18, 2026 by
urkud
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feat(AlgebraicGeometry): morphisms of finite type induce essentially of finite type stalk maps
t-algebraic-geometry
Algebraic geometry
#34101
opened Jan 18, 2026 by
chrisflav
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feat(Analysis/Distribution): more Analysis (normed *, calculus)
smulLeftCLM lemmas for tempered distributions
t-analysis
#34100
opened Jan 18, 2026 by
mcdoll
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feat(Analysis/Distribution): Fourier multiplier
blocked-by-other-PR
This PR depends on another PR (this label is automatically managed by a bot)
merge-conflict
The PR has a merge conflict with master, and needs manual merging. (this label is managed by a bot)
t-analysis
Analysis (normed *, calculus)
WIP
Work in progress
#34099
opened Jan 18, 2026 by
mcdoll
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1 task
chore(MeasureTheory): golf some proofs
blocked-by-other-PR
This PR depends on another PR (this label is automatically managed by a bot)
t-measure-probability
Measure theory / Probability theory
#34098
opened Jan 18, 2026 by
CoolRmal
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1 task
chore(MeasureTheory): make some arguments implicit
easy
< 20s of review time. See the lifecycle page for guidelines.
t-measure-probability
Measure theory / Probability theory
#34097
opened Jan 18, 2026 by
CoolRmal
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feat(Data/Finsupp/Single): generalize single_eq_set_indicator
easy
< 20s of review time. See the lifecycle page for guidelines.
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)
#34095
opened Jan 18, 2026 by
IlPreteRosso
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feat(Topology/Sheaves): use 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
abbrev for Presheaf, IsSheaf, and 'Sheaf'
new-contributor
#34094
opened Jan 18, 2026 by
Brian-Nugent
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