Description: Homeomorphisms preserve closedness. (Contributed by Jeff Hankins, 3-Jul-2009) (Revised by Mario Carneiro, 3-Jun-2014)
Ref | Expression | ||
---|---|---|---|
Assertion | hmeoclda |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | hmeocnvcn | ||
2 | 1 | 3ad2ant3 | |
3 | imacnvcnv | ||
4 | cnclima | ||
5 | 3 4 | eqeltrrid | |
6 | 2 5 | sylan |