Theorem helsh

Description: Hilbert space is a subspace of Hilbert space. (Contributed by NM, 2-Jun-2004) (New usage is discouraged.)

	Ref	Expression
Assertion	helsh	⊢ ℋ ∈ Sℋ

Proof

Step	Hyp	Ref	Expression
1		helch	⊢ ℋ ∈ Cℋ
2	1	chshii	⊢ ℋ ∈ Sℋ