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Pull requests: leanprover-community/mathlib4

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Pull requests list

feat(Order): Knaster–Tarski fixed points on an interval awaiting-zulip There is a Zulip discussion; the author should await and report/implement the decision reached there new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-order Order theory
#42225 opened Jul 29, 2026 by matt-w-horn • Draft
3
doc: sync area READMEs with the directory tree 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!
#42224 opened Jul 29, 2026 by matt-w-horn Loading…
6
feat(Computability/Reduce): the halting problem is many-one complete new-contributor This PR was made by a contributor with at most 5 merged PRs. Welcome to the community! t-computability Computability theory (TMs, DFAs, languages, grammars, etc)
#42223 opened Jul 29, 2026 by cameronfreer Contributor Loading…
2
chore(AlgebraicTopology/SimplexCategory): delete synthesizable instances t-algebraic-topology Algebraic topology
#42222 opened Jul 29, 2026 by YaelDillies Contributor Loading…
1
feat(Data/FunLike): add IsTorsionFree theorems large-import Automatically added label for PRs with a significant increase in transitive imports t-data Data (lists, quotients, numbers, etc)
#42221 opened Jul 29, 2026 by mcdoll Member Loading…
1
feat(Algebra): use IsApply for Finsupp large-import Automatically added label for PRs with a significant increase in transitive imports t-algebra Algebra (groups, rings, fields, etc)
#42220 opened Jul 29, 2026 by mcdoll Member • Draft
1
feat(Tactic/Linter): unneededImport linter with closure impact report t-linter Linter
#42217 opened Jul 29, 2026 by marcelolynch Contributor • Draft
1
feat(Tactic/Linter): unusedVariableCommand linter for unused section variables t-linter Linter
#42216 opened Jul 29, 2026 by marcelolynch Contributor • Draft
1
chore: remove unused section variables
#42214 opened Jul 29, 2026 by marcelolynch Contributor • Draft
5
fix(LinearAlgebra/Matrix): move CommSemiring.strongRankCondition_of_nontrivial to public easy < 20s of review time. See the lifecycle page for guidelines. t-algebra Algebra (groups, rings, fields, etc)
#42212 opened Jul 29, 2026 by wwylele Collaborator Loading…
3
feat(ModularForms): Ramanujan formula for derivatives 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 sphere-packing Material from https://github.com/thefundamentaltheor3m/Sphere-Packing-Lean t-number-theory Number theory (also use t-algebra or t-analysis to specialize)
#42211 opened Jul 29, 2026 by seewoo5 Collaborator • Draft
1 task
2
feat(NumberTheory/ModularForms): E₂ is 1-periodic LLM-generated PRs with substantial input from LLMs - review accordingly sphere-packing Material from https://github.com/thefundamentaltheor3m/Sphere-Packing-Lean t-number-theory Number theory (also use t-algebra or t-analysis to specialize)
#42210 opened Jul 29, 2026 by seewoo5 Collaborator Loading…
1
feat(Algebra/QuadraticAlgebra): change of generator t-algebra Algebra (groups, rings, fields, etc)
#42209 opened Jul 29, 2026 by xroblot Collaborator Loading…
1
chore: remove some (triple) underscore soup
#42208 opened Jul 29, 2026 by felixpernegger Contributor Loading…
7
feat(Algebra/QuadraticAlgebra): add the trace t-algebra Algebra (groups, rings, fields, etc)
#42207 opened Jul 28, 2026 by xroblot Collaborator Loading…
7
feat(Algebra/QuadraticAlgebra): discriminant and classification blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) t-algebra Algebra (groups, rings, fields, etc)
#42206 opened Jul 28, 2026 by xroblot Collaborator Loading…
2 tasks
2
chore(Geometry/Manifold): avoid some underscore soup t-differential-geometry Manifolds etc
#42205 opened Jul 28, 2026 by grunweg Contributor Loading…
5
chore(Geometry/Manifold/IsManifold/InteriorBoundary): golf a proof easy < 20s of review time. See the lifecycle page for guidelines. t-differential-geometry Manifolds etc
#42204 opened Jul 28, 2026 by grunweg Contributor Loading…
1
feat(Algebra/MvPolynomial): compact only the right summand of a sum of variables 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)
#42203 opened Jul 28, 2026 by cameronfreer Contributor Loading…
2
feat: define PositiveContinuousLinearMap awaiting-author A reviewer has asked the author a question or requested changes. t-topology Topological spaces, uniform spaces, metric spaces, filters
#42202 opened Jul 28, 2026 by j-loreaux Contributor Loading…
9
refactor(Tactic/Linter/Header): make the header linter stateful blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) t-linter Linter
#42201 opened Jul 28, 2026 by marcelolynch Contributor • Draft
1 task
2
feat(GroupTheory/Finiteness): add general IsMulFG t-algebra Algebra (groups, rings, fields, etc) t-group-theory Group theory
#42200 opened Jul 28, 2026 by tb65536 Contributor Loading…
4
feat(Topology/Instances/AddCircle/Defs): add equivAddCircle_eq, continuous_equivAddCircle awaiting-author A reviewer has asked the author a question or requested changes. carleson part of the ongoing formalization of Carleson's theorem t-topology Topological spaces, uniform spaces, metric spaces, filters
#42198 opened Jul 28, 2026 by lakesare Contributor Loading…
4
Nuclear operator 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!
#42197 opened Jul 28, 2026 by mpacholski • Draft
2
feat: IsLocallyClosedAt predicate t-topology Topological spaces, uniform spaces, metric spaces, filters
#42196 opened Jul 28, 2026 by ADedecker Member • Draft
1
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