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Mirrors > Home > QLE Home > Th. List > u4lemona | Unicode version |
Description: Lemma for non-tollens implication study. |
Ref | Expression |
---|---|
u4lemona |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-i4 47 | . . 3 | |
2 | 1 | ax-r5 38 | . 2 |
3 | or32 82 | . . 3 | |
4 | ax-a3 32 | . . . . . 6 | |
5 | lea 160 | . . . . . . . 8 | |
6 | 5 | df-le2 131 | . . . . . . 7 |
7 | 6 | lor 70 | . . . . . 6 |
8 | 4, 7 | ax-r2 36 | . . . . 5 |
9 | 8 | ax-r5 38 | . . . 4 |
10 | comor1 461 | . . . . . . . . 9 | |
11 | 10 | comcom7 460 | . . . . . . . 8 |
12 | comor2 462 | . . . . . . . 8 | |
13 | 11, 12 | com2an 484 | . . . . . . 7 |
14 | 13, 10 | com2or 483 | . . . . . 6 |
15 | 12 | comcom2 183 | . . . . . 6 |
16 | 14, 15 | fh4 472 | . . . . 5 |
17 | lear 161 | . . . . . . . . . 10 | |
18 | leor 159 | . . . . . . . . . 10 | |
19 | 17, 18 | letr 137 | . . . . . . . . 9 |
20 | leo 158 | . . . . . . . . 9 | |
21 | 19, 20 | lel2or 170 | . . . . . . . 8 |
22 | 21 | df-le2 131 | . . . . . . 7 |
23 | ax-a3 32 | . . . . . . . 8 | |
24 | df-a 40 | . . . . . . . . . . . 12 | |
25 | 24 | ax-r1 35 | . . . . . . . . . . 11 |
26 | 25 | con3 68 | . . . . . . . . . 10 |
27 | 26 | lor 70 | . . . . . . . . 9 |
28 | df-t 41 | . . . . . . . . . 10 | |
29 | 28 | ax-r1 35 | . . . . . . . . 9 |
30 | 27, 29 | ax-r2 36 | . . . . . . . 8 |
31 | 23, 30 | ax-r2 36 | . . . . . . 7 |
32 | 22, 31 | 2an 79 | . . . . . 6 |
33 | an1 106 | . . . . . 6 | |
34 | 32, 33 | ax-r2 36 | . . . . 5 |
35 | 16, 34 | ax-r2 36 | . . . 4 |
36 | 9, 35 | ax-r2 36 | . . 3 |
37 | 3, 36 | ax-r2 36 | . 2 |
38 | 2, 37 | ax-r2 36 | 1 |
Colors of variables: term |
Syntax hints: wb 1 wn 4 wo 6 wa 7 wt 8 wi4 15 |
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-i4 47 df-le1 130 df-le2 131 df-c1 132 df-c2 133 |
This theorem is referenced by: u4lemnaa 643 u4lem5 764 |
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