Group is Quasigroup
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Theorem
Let $\struct {G, \circ}$ be a group.
Then $\struct {G, \circ}$ is a quasigroup.
Proof
By the definition of a quasigroup it must be shown that:
- for all $g \in G$, the left and right regular representations of $\lambda_g$ and $\rho_g$ are permutations on $G$.
This follows immediately from Regular Representations in Group are Permutations.
$\blacksquare$