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Mirrors > Home > QLE Home > Th. List > comm0 | Unicode version |
Description: Commutation with 0. Kalmbach 83 p. 20. |
Ref | Expression |
---|---|
comm0 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-a2 31 | . . . . 5 | |
2 | or0 102 | . . . . 5 | |
3 | 1, 2 | ax-r2 36 | . . . 4 |
4 | 3 | ax-r1 35 | . . 3 |
5 | an0 108 | . . . . 5 | |
6 | df-f 42 | . . . . . . . 8 | |
7 | 6 | con2 67 | . . . . . . 7 |
8 | 7 | lan 77 | . . . . . 6 |
9 | an1 106 | . . . . . 6 | |
10 | 8, 9 | ax-r2 36 | . . . . 5 |
11 | 5, 10 | 2or 72 | . . . 4 |
12 | 11 | ax-r1 35 | . . 3 |
13 | 4, 12 | ax-r2 36 | . 2 |
14 | 13 | df-c1 132 | 1 |
Colors of variables: term |
Syntax hints: wc 3 wn 4 wo 6 wa 7 wt 8 wf 9 |
This theorem was proved from axioms: ax-a1 30 ax-a2 31 ax-a4 33 ax-a5 34 ax-r1 35 ax-r2 36 ax-r4 37 ax-r5 38 |
This theorem depends on definitions: df-a 40 df-t 41 df-f 42 df-c1 132 |
This theorem is referenced by: wcom0 407 |
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