# Finite-extensible implies Hall-semidirectly extensible

This article gives the statement and possibly, proof, of an implication relation between two automorphism properties. That is, it states that every automorphism satisfying the first automorphism property (i.e., finite-extensible automorphism) must also satisfy the second automorphism property (i.e., Hall-semidirectly extensible automorphism)
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## Statement

Suppose $G$ is a finite group and $\sigma$ is a finite-extensible automorphism of $G$. Then, $\sigma$ is a Hall-semidirectly extensible automorphism of $G$.

## Definitions used

### Finite-extensible automorphism

Further information: Finite-extensible automorphism

### Hall-semidirectly extensible automorphism

Further information: Hall-semidirectly extensible automorphism

## Proof

This is direct from the definitions.