Theorem: mem_conjugate_iff (FormalisingMathematics2024/Solutions/Section07subgroupsAndHomomorphisms/Sheet1.lean)

State before:
G : Type
inst✝ : Group G
a b : G
H K : Subgroup G
x y z : G
⊢ a ∈ conjugate H x ↔ ∃ h ∈ H, a = x * h * x⁻¹
Tactic:
rfl
State after:
no goals