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Mirrors > Home > QLE Home > Th. List > oa3-4lem | Unicode version |
Description: Lemma for 3-OA(4). Equivalence with substitution into 6-OA dual. |
Ref | Expression |
---|---|
oa3-4lem |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfb 94 | . . . . . 6 | |
2 | ax-a2 31 | . . . . . . . 8 | |
3 | df-i1 44 | . . . . . . . 8 | |
4 | an1 106 | . . . . . . . . 9 | |
5 | 4 | lor 70 | . . . . . . . 8 |
6 | 2, 3, 5 | 3tr1 63 | . . . . . . 7 |
7 | ax-a2 31 | . . . . . . . 8 | |
8 | df-i1 44 | . . . . . . . 8 | |
9 | an1 106 | . . . . . . . . 9 | |
10 | 9 | lor 70 | . . . . . . . 8 |
11 | 7, 8, 10 | 3tr1 63 | . . . . . . 7 |
12 | 6, 11 | 2an 79 | . . . . . 6 |
13 | 1, 12 | 2or 72 | . . . . 5 |
14 | 13 | ax-r1 35 | . . . 4 |
15 | 14 | lan 77 | . . 3 |
16 | 15 | lor 70 | . 2 |
17 | 16 | lan 77 | 1 |
Colors of variables: term |
Syntax hints: wb 1 wn 4 tb 5 wo 6 wa 7 wt 8 wi1 12 |
This theorem was proved from axioms: ax-a1 30 ax-a2 31 ax-a5 34 ax-r1 35 ax-r2 36 ax-r4 37 ax-r5 38 |
This theorem depends on definitions: df-b 39 df-a 40 df-t 41 df-f 42 df-i1 44 |
This theorem is referenced by: oa3-2to4 988 |
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