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Mirrors > Home > QLE Home > Th. List > u1lemnonb | Unicode version |
Description: Lemma for Sasaki implication study. |
Ref | Expression |
---|---|
u1lemnonb |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | u1lemab 610 | . . . 4 | |
2 | ax-a2 31 | . . . . 5 | |
3 | anor2 89 | . . . . . 6 | |
4 | df-a 40 | . . . . . 6 | |
5 | 3, 4 | 2or 72 | . . . . 5 |
6 | 2, 5 | ax-r2 36 | . . . 4 |
7 | 1, 6 | ax-r2 36 | . . 3 |
8 | df-a 40 | . . 3 | |
9 | oran3 93 | . . 3 | |
10 | 7, 8, 9 | 3tr2 64 | . 2 |
11 | 10 | con1 66 | 1 |
Colors of variables: term |
Syntax hints: wb 1 wn 4 wo 6 wa 7 wi1 12 |
This theorem was proved from axioms: ax-a1 30 ax-a2 31 ax-a3 32 ax-a4 33 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-i1 44 df-le1 130 df-le2 131 df-c1 132 df-c2 133 |
This theorem is referenced by: (None) |
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