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Pull requests: leanprover-community/mathlib4
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feat(Polish) : add analyticSet_graph_iff_measurable
#41945
opened Jul 20, 2026 by
generantao
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1 task
feat(RingTheory/Ideal/HasFiniteQuotients): Finite instance for a quotient by a nonzero ideal
#41943
opened Jul 20, 2026 by
xroblot
Collaborator
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chore(Module.FinitePresentation): rename
Module.FinitePresentation to Module.IsFinitelyPresented
#41941
opened Jul 20, 2026 by
homeowmorphism
Contributor
•
Draft
chore(Dynamics): deprecate Dynamical Systems
IsForwardInvariant in favour of new Set.IsInvariantOn
t-dynamics
#41940
opened Jul 20, 2026 by
mcdoll
Member
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feat(Topology): iff version of
t2Space_of_one_sep
#41939
opened Jul 19, 2026 by
mcdoll
Member
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chore(Linter/DirectoryDependency): move forbidden directories into a JSON file
#41938
opened Jul 19, 2026 by
rosborn
Contributor
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style: fix spacing around left arrows
easy
< 20s of review time. See the lifecycle page for guidelines.
#41937
opened Jul 19, 2026 by
felixpernegger
Contributor
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feat(Group Theory/Presentation): define group presentations
t-group-theory
Group theory
#41936
opened Jul 19, 2026 by
homeowmorphism
Contributor
•
Draft
feat(Probability/Independence): grouping an independent family by pairwise disjoint index sets
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
#41935
opened Jul 19, 2026 by
martinamaggio
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feat(Order/Nucleus): a nucleus on a Boolean algebra is closed
LLM-generated
PRs with substantial input from LLMs - review accordingly
new-contributor
This PR was made by a contributor with at most 5 merged PRs. Welcome to the community!
t-order
Order theory
#41934
opened Jul 19, 2026 by
NickKobs
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chore: prefer
beta_reduce over (d)simp only
#41933
opened Jul 19, 2026 by
felixpernegger
Contributor
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Feat/projective with seminorms
new-contributor
This PR was made by a contributor with at most 5 merged PRs. Welcome to the community!
#41932
opened Jul 19, 2026 by
mpacholski
•
Draft
chore: replace some redundant < 20s of review time. See the lifecycle page for guidelines.
simpa only using h
easy
#41931
opened Jul 19, 2026 by
felixpernegger
Contributor
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fix(GroupTheory/Coprod): fix recursor argument name
easy
< 20s of review time. See the lifecycle page for guidelines.
t-group-theory
Group theory
#41930
opened Jul 19, 2026 by
plp127
Contributor
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fix(Algebra/FreeMonoid): fix recursor argument names
t-group-theory
Group theory
#41929
opened Jul 19, 2026 by
plp127
Contributor
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feat(Algebra/FreeMonoid): < 20s of review time. See the lifecycle page for guidelines.
t-algebra
Algebra (groups, rings, fields, etc)
FreeMonoid.length is surjective
easy
#41928
opened Jul 19, 2026 by
plp127
Contributor
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chore: replace < 20s of review time. See the lifecycle page for guidelines.
simp only [] with simp only
easy
#41927
opened Jul 19, 2026 by
felixpernegger
Contributor
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feat(CategoryTheory/ObjectProperty/HasFiniteResolution): relation with projective dimension
blocked-by-other-PR
This PR depends on another PR (this label is automatically managed by a bot)
t-category-theory
Category theory
#41925
opened Jul 19, 2026 by
mbkybky
Collaborator
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1 task
feat(NumberTheory): the number-theoretic transform
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!
#41924
opened Jul 19, 2026 by
junjihashimoto
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1 task
feat(Algebra): Algebra (groups, rings, fields, etc)
IsUnital and IsNotUnital classes
t-algebra
#41923
opened Jul 19, 2026 by
themathqueen
Collaborator
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feat(Analysis/Fourier): the Plancherel theorem for the Clifford-Fourier transform
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-analysis
Analysis (normed *, calculus)
#41922
opened Jul 19, 2026 by
junjihashimoto
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1 task
feat(Analysis/Fourier): the Plancherel theorem for hypercomplex Fourier transforms
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!
#41921
opened Jul 19, 2026 by
junjihashimoto
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1 task
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