Description: An equality inference for the maps-to notation. (Contributed by Glauco Siliprandi, 23-Oct-2021)
Ref | Expression | ||
---|---|---|---|
Hypotheses | mpteq12da.1 | ||
mpteq12da.2 | |||
mpteq12da.3 | |||
Assertion | mpteq12da |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mpteq12da.1 | ||
2 | mpteq12da.2 | ||
3 | mpteq12da.3 | ||
4 | 1 2 | alrimi | |
5 | 1 3 | ralrimia | |
6 | mpteq12f | ||
7 | 4 5 6 | syl2anc |