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Pull requests: leanprover-community/mathlib4
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feat: dense orders have elements lying between two finite sets
large-import
Automatically added label for PRs with a significant increase in transitive imports
t-order
Order theory
#33700
opened Jan 7, 2026 by
vihdzp
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chore(Algebra/Ring): semireal definition lemmas
t-algebra
Algebra (groups, rings, fields, etc)
#33699
opened Jan 7, 2026 by
artie2000
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feat(Algebra/Ring): characteristic of semireal ring
t-algebra
Algebra (groups, rings, fields, etc)
#33698
opened Jan 7, 2026 by
artie2000
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feat(FieldTheory): real closed field
t-algebra
Algebra (groups, rings, fields, etc)
#33697
opened Jan 7, 2026 by
artie2000
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fix(ci): show helpful message when runLinter needs master merge
CI
Modifies the continuous integration setup or other automation
#33696
opened Jan 7, 2026 by
kim-em
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ci(daily.yml): remove continue-on-error from check steps
CI
Modifies the continuous integration setup or other automation
#33694
opened Jan 7, 2026 by
bryangingechen
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feat(Mathlib/Analysis/Normed/Module): add instances of
CompleteSpace for Submodules and ClosedSubmodule
#33693
opened Jan 7, 2026 by
yoh-tanimoto
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feat(LinearAlgebra/Transvection/SpecialLinearGroup): generation of the special linear group by transvections
blocked-by-other-PR
This PR depends on another PR (this label is automatically managed by a bot)
file-removed
A Lean module was (re)moved without a `deprecated_module` annotation
t-algebra
Algebra (groups, rings, fields, etc)
#33692
opened Jan 6, 2026 by
AntoineChambert-Loir
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8 tasks
feat(scripts): add find-ci-errors.sh to diagnose widespread CI failures
CI
Modifies the continuous integration setup or other automation
delegated
This pull request has been delegated to the PR author (or occasionally another non-maintainer).
#33691
opened Jan 6, 2026 by
kim-em
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feat: Defining Lie Rinehart algebras
awaiting-author
A reviewer has asked the author a question or requested changes.
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)
refactor(Probability): make PMF return NNReal
t-measure-probability
Measure theory / Probability theory
WIP
Work in progress
#33689
opened Jan 6, 2026 by
BoltonBailey
•
Draft
feat(PMF): add expectation lemmas for Poisson PMF
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
#33688
opened Jan 6, 2026 by
Citronhat
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fix(Tactic/DepRewrite): unknown free variable on Tactics, attributes or user commands
rw! at local hypothesis
t-meta
#33686
opened Jan 6, 2026 by
plp127
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chore(Order/Defs/Unbundled): deprecate Order theory
IsAntisymm in favor of core's Std.Antisymm
t-order
#33685
opened Jan 6, 2026 by
SnirBroshi
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feat(AlgebraicTopology/SimplicialSet): the simplicial homotopy induced by an homotopy
t-algebraic-topology
Algebraic topology
WIP
Work in progress
#33683
opened Jan 6, 2026 by
joelriou
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chore(Topology/Order/Lattice): tag continuity lemmas with Topological spaces, uniform spaces, metric spaces, filters
fun_prop
t-topology
#33682
opened Jan 6, 2026 by
gasparattila
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feat(Probability/ProbabilityMassFunction): add statistical distance
t-measure-probability
Measure theory / Probability theory
#33680
opened Jan 6, 2026 by
BoltonBailey
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feat(Probability): add formulas for the measures formed by a density with respect to counting or dirac measures.
t-measure-probability
Measure theory / Probability theory
#33679
opened Jan 6, 2026 by
DavidLedvinka
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feat(Chebyshev/Orthogonality): Chebyshev T polynomials are orthogonal
t-analysis
Analysis (normed *, calculus)
#33676
opened Jan 6, 2026 by
YuvalFilmus
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feat(RingTheory/RingHom): remove unnecessary assumptions in Ring theory
WIP
Work in progress
locally_StableUnderCompositionWithLocalizationAwayTarget (WIP)
t-ring-theory
#33675
opened Jan 6, 2026 by
euprunin
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feat(Algebra/Algebra/Subalgebra): remove unnecessary assumptions in Algebra (groups, rings, fields, etc)
WIP
Work in progress
iSup_induction and iSup_induction' (WIP)
t-algebra
#33674
opened Jan 6, 2026 by
euprunin
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