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Mirrors > Home > QLE Home > Th. List > di | Unicode version |
Description: Dishkant implication. |
Ref | Expression |
---|---|
di |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | conb 122 | . . 3 | |
2 | ax-a1 30 | . . . . . 6 | |
3 | 2 | ax-r1 35 | . . . . 5 |
4 | 3 | rbi 98 | . . . 4 |
5 | mi 125 | . . . 4 | |
6 | 4, 5 | ax-r2 36 | . . 3 |
7 | 1, 6 | ax-r2 36 | . 2 |
8 | ancom 74 | . . . 4 | |
9 | df-a 40 | . . . 4 | |
10 | 8, 9 | ax-r2 36 | . . 3 |
11 | 10 | rbi 98 | . 2 |
12 | ax-a1 30 | . . . . 5 | |
13 | ax-a1 30 | . . . . 5 | |
14 | 12, 13 | 2an 79 | . . . 4 |
15 | 8, 14 | ax-r2 36 | . . 3 |
16 | 15 | lor 70 | . 2 |
17 | 7, 11, 16 | 3tr1 63 | 1 |
Colors of variables: term |
Syntax hints: wb 1 wn 4 tb 5 wo 6 wa 7 |
This theorem was proved from axioms: ax-a1 30 ax-a2 31 ax-a3 32 ax-a5 34 ax-r1 35 ax-r2 36 ax-r4 37 ax-r5 38 |
This theorem depends on definitions: df-b 39 df-a 40 df-t 41 df-f 42 |
This theorem is referenced by: (None) |
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