Description: Slightly more general equality inference for the maps-to notation. (Contributed by FL, 14-Sep-2013) (Revised by Mario Carneiro, 16-Dec-2013)
Ref | Expression | ||
---|---|---|---|
Hypotheses | mpteq2da.1 | ||
mpteq2da.2 | |||
Assertion | mpteq2da |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mpteq2da.1 | ||
2 | mpteq2da.2 | ||
3 | eqid | ||
4 | 3 | ax-gen | |
5 | 2 | ex | |
6 | 1 5 | ralrimi | |
7 | mpteq12f | ||
8 | 4 6 7 | sylancr |