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Mirrors > Home > QLE Home > Th. List > comdr | Unicode version |
Description: Commutation dual. Kalmbach 83 p. 23. |
Ref | Expression |
---|---|
comdr.1 |
Ref | Expression |
---|---|
comdr |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | comdr.1 | . . . . 5 | |
2 | df-a 40 | . . . . . 6 | |
3 | oran 87 | . . . . . . . . 9 | |
4 | 3 | con2 67 | . . . . . . . 8 |
5 | oran 87 | . . . . . . . . 9 | |
6 | 5 | con2 67 | . . . . . . . 8 |
7 | 4, 6 | 2or 72 | . . . . . . 7 |
8 | 7 | ax-r4 37 | . . . . . 6 |
9 | 2, 8 | ax-r2 36 | . . . . 5 |
10 | 1, 9 | ax-r2 36 | . . . 4 |
11 | 10 | con2 67 | . . 3 |
12 | 11 | df-c1 132 | . 2 |
13 | 12 | comcom5 458 | 1 |
Colors of variables: term |
Syntax hints: wb 1 wc 3 wn 4 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 ax-r3 439 |
This theorem depends on definitions: df-b 39 df-a 40 df-t 41 df-f 42 df-le1 130 df-le2 131 df-c1 132 df-c2 133 |
This theorem is referenced by: (None) |
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