Metamath Proof Explorer


Theorem shoccl

Description: Closure of complement of Hilbert subspace. Part of Remark 3.12 of Beran p. 107. (Contributed by NM, 13-Oct-1999) (New usage is discouraged.)

Ref Expression
Assertion shoccl
|- ( A e. SH -> ( _|_ ` A ) e. CH )

Proof

Step Hyp Ref Expression
1 shss
 |-  ( A e. SH -> A C_ ~H )
2 occl
 |-  ( A C_ ~H -> ( _|_ ` A ) e. CH )
3 1 2 syl
 |-  ( A e. SH -> ( _|_ ` A ) e. CH )