Theorem mul_pos_iff_of_pos_left

Modification history

2023-12-26 07:50
Mathlib/Algebra/Order/Ring/Lemmas.lean
feat: `0 ≤ a * b ↔ (0 < a → 0 ≤ b) ∧ (0 < b → 0 ≤ a)` (#9219) …
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