Description: Infer conjunction of premises. (Contributed by NM, 10-Feb-1995)
Ref | Expression | ||
---|---|---|---|
Hypotheses | 3pm3.2i.1 | |
|
3pm3.2i.2 | |
||
3pm3.2i.3 | |
||
Assertion | 3pm3.2i | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3pm3.2i.1 | |
|
2 | 3pm3.2i.2 | |
|
3 | 3pm3.2i.3 | |
|
4 | 1 2 | pm3.2i | |
5 | df-3an | |
|
6 | 4 3 5 | mpbir2an | |