Theorem Finset.sum_mul_self_eq_zero_iff

Modification history

2026-08-31 10:08
Mathlib/Algebra/Order/BigOperators/Ring/Finset.lean
feat: add zero lemmas for even powers (#43161)
Modified Finset.sum_mul_self_eq_zero_iffView on Github →
2025-04-09 10:22
Mathlib/Algebra/Order/BigOperators/Ring/Finset.lean
chore: use mixin ordered algebraic typeclasses (part 2) (#20595)
Modified Finset.sum_mul_self_eq_zero_iffView on Github →
2024-11-23 14:58
Mathlib/Algebra/Order/BigOperators/Ring/Finset.lean
feat: Sedrakyan's lemma (#19311) …
Modified Finset.sum_mul_self_eq_zero_iffView on Github →
2024-11-20 20:34
Mathlib/Algebra/Order/BigOperators/Ring/Finset.lean
feat (LinearAlgebra/RootSystem/Finite): nondegeneracy of canonical bilinear form restricted to root span (#18569) …
Added Finset.sum_mul_self_eq_zero_iffView on Github →