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Pull requests: leanprover-community/mathlib4

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Pull requests list

feat(Combinatorics/SimpleGraph/Connectivity): simple graph is 2-edge-connected iff it has no bridge new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-combinatorics Combinatorics
#42839 opened Aug 16, 2026 by JadAbouHawili Contributor Loading…
feat(Order/SupClosed): a lower directed set is sup-closed easy < 20s of review time. See the lifecycle page for guidelines. t-order Order theory
#42838 opened Aug 16, 2026 by SnirBroshi Collaborator Loading…
feat(Order/Directed): the empty set is directed easy < 20s of review time. See the lifecycle page for guidelines. t-order Order theory
#42837 opened Aug 16, 2026 by SnirBroshi Collaborator Loading…
feat(NumberTheory/Padics): the Amice transform is a ring isomorphism blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) t-number-theory Number theory (also use t-algebra or t-analysis to specialize)
#42836 opened Aug 16, 2026 by loefflerd Contributor Loading…
2 tasks
feat(RingTheory/NoetherNormalization): add that s is Krull dimension to theorem statements 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 new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-ring-theory Ring theory
#42835 opened Aug 16, 2026 by rshlyakh Contributor Loading…
1 task
doc(Data/Rel): fix variable name in Relation.Map example 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)
#42834 opened Aug 16, 2026 by ashebson Loading…
feat(Combinatorics/SimpleGraph/Connnectivity): efficient decidability instances LLM-generated PRs with substantial input from LLMs - review accordingly t-combinatorics Combinatorics
#42833 opened Aug 16, 2026 by YaelDillies Contributor Loading…
feat(NumberTheory/Padics): the Amice transform t-number-theory Number theory (also use t-algebra or t-analysis to specialize)
#42832 opened Aug 16, 2026 by loefflerd Contributor Loading…
feat(CategoryTheory/Linear): category algebra of R-linear category 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-category-theory Category theory
#42831 opened Aug 16, 2026 by ray-shang Loading…
refactor: change ProbabilityMeasure.map to not require measurability t-measure-probability Measure theory / Probability theory
#42830 opened Aug 16, 2026 by EtienneC30 Member Draft
feat(Topology/InfiniteSum): applying a tsum of CLM with operator norm t-topology Topological spaces, uniform spaces, metric spaces, filters
#42829 opened Aug 16, 2026 by wwylele Collaborator Loading…
chore(RingTheory/Pochhammer): fix the type of ascPochhammer_eval_succ t-ring-theory Ring theory
#42827 opened Aug 16, 2026 by wwylele Collaborator Loading…
feat(Order/Interval/Set/Disjoint): a union of Ioi is the Ioi of the least element easy < 20s of review time. See the lifecycle page for guidelines. t-order Order theory
#42826 opened Aug 16, 2026 by SnirBroshi Collaborator Loading…
feat(RingTheory): diagonalisable bialgebras are closed under tensor product blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) LLM-generated PRs with substantial input from LLMs - review accordingly t-ring-theory Ring theory toric Part of the ongoing formalisation of toric varieties
#42824 opened Aug 16, 2026 by YaelDillies Contributor Loading…
1 task
chore: let to_additive generate hand-written additive twins new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-group-theory Group theory tech debt Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip
#42823 opened Aug 16, 2026 by attilavjda Contributor Loading…
chore(Algebra/Module/Equiv): add deprecated module for /Equiv.lean blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot)
#42822 opened Aug 16, 2026 by TJHeeringa Contributor Loading…
1 task
chore: deprecate PMF t-measure-probability Measure theory / Probability theory
#42821 opened Aug 16, 2026 by EtienneC30 Member Draft
feat(Data/Nat/Choose): elementary Chernoff bound for tail sums of binomial coefficients 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)
#42820 opened Aug 16, 2026 by tolgadgrmnc27 Loading…
1 task done
chore(Algebra/Module/Equiv): split Equiv into Basic, Pi, Prod and Submodule file-removed A Lean module was (re)moved without a `deprecated_module` annotation
#42818 opened Aug 16, 2026 by TJHeeringa Contributor Loading…
feat(ValuativeRel): instance IsLinearTopology 𝒪[K] 𝒪[K] t-topology Topological spaces, uniform spaces, metric spaces, filters
#42817 opened Aug 16, 2026 by WenrongZou Collaborator Loading…
refactor(CategoryTheory): colimits of representable presheaves t-category-theory Category theory tech debt Tracking cross-cutting technical debt, see e.g. the "Technical debt counters" stream on zulip WIP Work in progress
#42816 opened Aug 16, 2026 by joelriou Contributor Loading…
ProTip! What’s not been updated in a month: updated:<2026-07-16.