Description: An inference based on modus ponens. (Contributed by NM, 10-Apr-1994) (Proof shortened by Wolf Lammen, 19-Nov-2012)
Ref | Expression | ||
---|---|---|---|
Hypotheses | mpan2i.1 | |
|
mpan2i.2 | |
||
Assertion | mpan2i | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mpan2i.1 | |
|
2 | mpan2i.2 | |
|
3 | 1 | a1i | |
4 | 3 2 | mpan2d | |