All issues

Search results

Rename .lipschitz to .lipschitzWith

Status: Open.

#42869 In leanprover-community/mathlib4;

· TJHeeringa opened on Aug 17, 2026

@[to_dual] fails when a Decidable instance's argument is itself an ite

Status: Open.

#42852 In leanprover-community/mathlib4;

· kim-em opened on Aug 17, 2026

agda2lean

Status: Open.

#42793 In leanprover-community/mathlib4;

· chboishabba opened on Aug 15, 2026

Missing: Sheppard's formula / Gaussian arcsine law E[sign X · sign Y] = (2/π) arcsin ρ

Status: Open.

#42600 In leanprover-community/mathlib4;

· overlordxrz-source opened on Aug 10, 2026

docs: update docs with new material

documentationImprovements or additions to documentationImprovements or additions to documentation

Status: Open.

Task

#42593 In leanprover-community/mathlib4;

· luigi-massacci opened on Aug 9, 2026

norm_num introduces Classical.choice on order goals over Nat/Int where decide does not

Status: Open.

#42565 In leanprover-community/mathlib4;

· zengineco opened on Aug 8, 2026

Define a typeclass for GO-space

good first issueGood for newcomersGood for newcomers

t-topologyTopological spaces, uniform spaces, metric spaces, filtersTopological spaces, uniform spaces, metric spaces, filters

Status: Open.

#42275 In leanprover-community/mathlib4;

· CoolRmal opened on Jul 30, 2026

calc? emits weird dagger characters

Status: Open.

#42155 In leanprover-community/mathlib4;

· FawadHa1der opened on Jul 27, 2026

deriving CommRing on InfiniteAdeleRing generates opaque _aux_* field definitions that defeat isDefEq at instances transparency

Status: Open.

#42057 In leanprover-community/mathlib4;

· anagnorisis2peripeteia opened on Jul 24, 2026

Ideas for contribution by undergraduate computer science students

Status: Open.

#42039 In leanprover-community/mathlib4;

· erelsgl opened on Jul 23, 2026

Differential of the determinant Jacobi's formula

Status: Open.

#41881 In leanprover-community/mathlib4;

· yalexey-jcode opened on Jul 18, 2026

linarith? fails while linarith finds the proofs

Status: Open.

#41471 In leanprover-community/mathlib4;

· FawadHa1der opened on Jul 7, 2026