Description: A single axiom for propositional calculus discovered by C. A. Meredith. (Contributed by Anthony Hart, 13-Aug-2011)
Ref | Expression | ||
---|---|---|---|
Assertion | meran2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | meran1 | ||
2 | 1 | imorri | |
3 | meran1 | ||
4 | 3 | imorri | |
5 | 2 4 | syl | |
6 | 5 | imori |