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Mirrors > Home > QLE Home > Th. List > oa6to4 | Unicode version |
Description: Derivation of 4-variable proper OA law, assuming 6-variable OA law. |
Ref | Expression |
---|---|
oa6to4.1 | |
oa6to4.2 | |
oa6to4.3 | |
oa6to4.oa6 |
Ref | Expression |
---|---|
oa6to4 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | oa6to4.oa6 | . . 3 | |
2 | 1 | oa6todual 952 | . 2 |
3 | oa6to4.1 | . . . 4 | |
4 | 3 | con1 66 | . . 3 |
5 | oa6to4.2 | . . . . . . . . 9 | |
6 | 5 | con1 66 | . . . . . . . 8 |
7 | 4, 6 | 2an 79 | . . . . . . 7 |
8 | 7 | lor 70 | . . . . . 6 |
9 | oa6to4.3 | . . . . . . . . . 10 | |
10 | 9 | con1 66 | . . . . . . . . 9 |
11 | 4, 10 | 2an 79 | . . . . . . . 8 |
12 | 11 | lor 70 | . . . . . . 7 |
13 | 6, 10 | 2an 79 | . . . . . . . 8 |
14 | 13 | lor 70 | . . . . . . 7 |
15 | 12, 14 | 2an 79 | . . . . . 6 |
16 | 8, 15 | 2or 72 | . . . . 5 |
17 | 16 | lan 77 | . . . 4 |
18 | 17 | lor 70 | . . 3 |
19 | 4, 18 | 2an 79 | . 2 |
20 | 4 | lan 77 | . . . . 5 |
21 | ancom 74 | . . . . 5 | |
22 | u1lemaa 600 | . . . . 5 | |
23 | 20, 21, 22 | 3tr 65 | . . . 4 |
24 | 6 | lan 77 | . . . . 5 |
25 | ancom 74 | . . . . 5 | |
26 | u1lemaa 600 | . . . . 5 | |
27 | 24, 25, 26 | 3tr 65 | . . . 4 |
28 | 23, 27 | 2or 72 | . . 3 |
29 | 10 | lan 77 | . . . 4 |
30 | ancom 74 | . . . 4 | |
31 | u1lemaa 600 | . . . 4 | |
32 | 29, 30, 31 | 3tr 65 | . . 3 |
33 | 28, 32 | 2or 72 | . 2 |
34 | 2, 19, 33 | le3tr2 141 | 1 |
Colors of variables: term |
Syntax hints: wb 1 wle 2 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: oa3-2to2s 990 axoa4a 1037 |
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