Description: The equivalence class of a cartesian product is the whole set. (Contributed by Thierry Arnoux, 15-Jan-2024)
Ref | Expression | ||
---|---|---|---|
Assertion | ecxpid |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | vex | ||
2 | elecg | ||
3 | 1 2 | mpan | |
4 | brxp | ||
5 | 4 | baib | |
6 | 3 5 | bitrd | |
7 | 6 | eqrdv |