Description: Every subcomplex Hilbert space is a complete metric space. (Contributed by Mario Carneiro, 17-Oct-2015)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | hlcms | |- ( W e. CHil -> W e. CMetSp ) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | hlbn | |- ( W e. CHil -> W e. Ban ) | |
| 2 | bncms | |- ( W e. Ban -> W e. CMetSp ) | |
| 3 | 1 2 | syl | |- ( W e. CHil -> W e. CMetSp ) |