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Mirrors > Home > QLE Home > Th. List > ud2lem0c | Unicode version |
Description: Lemma for unified disjunction. |
Ref | Expression |
---|---|
ud2lem0c |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-i2 45 | . . 3 | |
2 | oran 87 | . . . 4 | |
3 | oran 87 | . . . . . . 7 | |
4 | 3 | ax-r1 35 | . . . . . 6 |
5 | 4 | lan 77 | . . . . 5 |
6 | 5 | ax-r4 37 | . . . 4 |
7 | 2, 6 | ax-r2 36 | . . 3 |
8 | 1, 7 | ax-r2 36 | . 2 |
9 | 8 | con2 67 | 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-r1 35 ax-r2 36 ax-r4 37 ax-r5 38 |
This theorem depends on definitions: df-a 40 df-i2 45 |
This theorem is referenced by: wql2lem5 292 ud2lem1 563 ud2lem3 565 u2lem1 735 3vth9 812 2oalem1 825 oa43v 1028 oa63v 1032 |
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