Theorem sqcli

Description: Closure of square. (Contributed by NM, 2-Aug-1999)

	Ref	Expression
Hypothesis	sqval.1	⊢ 𝐴 ∈ ℂ
Assertion	sqcli	⊢ ( 𝐴 ↑ 2 ) ∈ ℂ

Proof

Step	Hyp	Ref	Expression
1		sqval.1	⊢ 𝐴 ∈ ℂ
2		sqcl	⊢ ( 𝐴 ∈ ℂ → ( 𝐴 ↑ 2 ) ∈ ℂ )
3	1 2	ax-mp	⊢ ( 𝐴 ↑ 2 ) ∈ ℂ