neg_one_eq_one_iff

∀ {R : Type u_1} [inst : Ring R] [Nontrivial R], -1 = 1 ↔ ringChar R = 2

Defined in: Mathlib.Algebra.CharP.Two
Cited by: 2 results in Mathlib
Foundations: Depth 52 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: Ring Nontrivial

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