Description: Equality theorem for the well-ordering predicate. (Contributed by NM, 9-Mar-1997)
Ref | Expression | ||
---|---|---|---|
Assertion | weeq1 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | freq1 | |
|
2 | soeq1 | |
|
3 | 1 2 | anbi12d | |
4 | df-we | |
|
5 | df-we | |
|
6 | 3 4 5 | 3bitr4g | |