Description: Given, a,b and a "definition" for c, c is demonstrated. (Contributed by Jarvin Udandy, 8-Sep-2020)
Ref | Expression | ||
---|---|---|---|
Hypotheses | plcofph.1 | |
|
plcofph.2 | |
||
plcofph.3 | |
||
Assertion | plcofph | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | plcofph.1 | |
|
2 | plcofph.2 | |
|
3 | plcofph.3 | |
|
4 | pm3.24 | |
|
5 | 2 4 | pm3.2i | |
6 | 5 | a1i | |
7 | 6 5 | pm3.2i | |
8 | 1 | bicomi | |
9 | 8 | biimpi | |
10 | 7 9 | ax-mp | |