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Mirrors > Home > QLE Home > Th. List > 3vth7 | Unicode version |
Description: A 3-variable theorem. |
Ref | Expression |
---|---|
3vth7 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-i2 45 | . . . . 5 | |
2 | df-i2 45 | . . . . 5 | |
3 | 1, 2 | 2an 79 | . . . 4 |
4 | anass 76 | . . . . . . . . . 10 | |
5 | 4 | ax-r1 35 | . . . . . . . . 9 |
6 | anor3 90 | . . . . . . . . . 10 | |
7 | 6 | lan 77 | . . . . . . . . 9 |
8 | an32 83 | . . . . . . . . 9 | |
9 | 5, 7, 8 | 3tr2 64 | . . . . . . . 8 |
10 | anidm 111 | . . . . . . . . . 10 | |
11 | 10 | lan 77 | . . . . . . . . 9 |
12 | 11 | ax-r1 35 | . . . . . . . 8 |
13 | an4 86 | . . . . . . . 8 | |
14 | 9, 12, 13 | 3tr 65 | . . . . . . 7 |
15 | 14 | lor 70 | . . . . . 6 |
16 | comanr2 465 | . . . . . . . 8 | |
17 | 16 | comcom6 459 | . . . . . . 7 |
18 | comanr2 465 | . . . . . . . 8 | |
19 | 18 | comcom6 459 | . . . . . . 7 |
20 | 17, 19 | fh3 471 | . . . . . 6 |
21 | 15, 20 | ax-r2 36 | . . . . 5 |
22 | 21 | ax-r1 35 | . . . 4 |
23 | 3, 22 | ax-r2 36 | . . 3 |
24 | 23 | lor 70 | . 2 |
25 | 3vth5 808 | . 2 | |
26 | df-i2 45 | . . 3 | |
27 | ax-a3 32 | . . 3 | |
28 | or12 80 | . . 3 | |
29 | 26, 27, 28 | 3tr 65 | . 2 |
30 | 24, 25, 29 | 3tr1 63 | 1 |
Colors of variables: term |
Syntax hints: wb 1 wn 4 wo 6 wa 7 wi2 13 |
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-i2 45 df-le1 130 df-le2 131 df-c1 132 df-c2 133 |
This theorem is referenced by: 3vth8 811 |
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