Description: A topological division ring is a topological space. (Contributed by Mario Carneiro, 5-Oct-2015)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | tdrgtps | |- ( R e. TopDRing -> R e. TopSp ) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | tdrgtrg | |- ( R e. TopDRing -> R e. TopRing ) | |
| 2 | trgtps | |- ( R e. TopRing -> R e. TopSp ) | |
| 3 | 1 2 | syl | |- ( R e. TopDRing -> R e. TopSp ) |