leanprover-community

leanprover-community/mathlib4

The math library of Lean 4

24 good first / help-wanted issues · Lean · last activity Jul 7, 2026

lean4
24 Open Issues Need Help Last updated: Jul 7, 2026

Open Issues Need Help

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good first issue
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue t-analysis
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue t-topology
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
enhancement good first issue help-wanted t-algebra
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
enhancement good first issue t-topology
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
enhancement good first issue t-topology t-analysis
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue t-analysis
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue t-differential-geometry
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
enhancement good first issue t-topology t-analysis
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
enhancement good first issue t-topology t-analysis
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
Sperner's lemma 6 months ago
good first issue t-combinatorics t-analysis
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue t-topology t-analysis t-euclidean-geometry
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue t-analysis
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue t-combinatorics
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
Edge-connectivity 10 months ago
good first issue t-combinatorics
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue please-adopt
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
enhancement good first issue t-analysis
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue help-wanted please-adopt
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4
good first issue t-combinatorics
leanprover-community/mathlib4
3.6K

The math library of Lean 4

Lean
#lean4