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Theorems · Theorem · group theory

IsPGroup.isMulCommutative_of_card_eq_prime_sq

∀ {p : ℕ} {G : Type u_1} [inst : Group G] [Fact (Nat.Prime p)], Nat.card G = p ^ 2 → IsMulCommutative G

A group of order p ^ 2 is commutative. See also IsPGroup.commGroupOfCardEqPrimeSq for the CommGroup instance.

Defined in
Mathlib.GroupTheory.PGroup
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Foundations
Depth 116 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
GroupFact

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