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Mirrors > Home > ILE Home > Th. List > pm2.01d | Unicode version |
Description: Deduction based on reductio ad absurdum. (Contributed by NM, 18-Aug-1993.) (Revised by Mario Carneiro, 31-Jan-2015.) |
Ref | Expression |
---|---|
pm2.01d.1 |
Ref | Expression |
---|---|
pm2.01d |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pm2.01d.1 | . 2 | |
2 | pm2.01 605 | . 2 | |
3 | 1, 2 | syl 14 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-in1 603 |
This theorem is referenced by: pm2.01da 625 pm2.65d 649 pm5.19 695 mtord 772 swopo 4223 rennim 10767 absle 10854 bj-nnclavius 12939 |
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