Description: The underlying set of the standard topology on the reals is the reals. (Contributed by FL, 4-Jun-2007)
Ref | Expression | ||
---|---|---|---|
Assertion | uniretop | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | unirnioo | |
|
2 | retopbas | |
|
3 | unitg | |
|
4 | 2 3 | ax-mp | |
5 | 1 4 | eqtr4i | |