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Mirrors > Home > QLE Home > Th. List > u1lemnab | Unicode version |
Description: Lemma for Sasaki implication study. |
Ref | Expression |
---|---|
u1lemnab |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | u1lemonb 635 | . . 3 | |
2 | oran1 91 | . . 3 | |
3 | df-f 42 | . . . . 5 | |
4 | 3 | con2 67 | . . . 4 |
5 | 4 | ax-r1 35 | . . 3 |
6 | 1, 2, 5 | 3tr2 64 | . 2 |
7 | 6 | con1 66 | 1 |
Colors of variables: term |
Syntax hints: wb 1 wn 4 wo 6 wa 7 wt 8 wf 9 wi1 12 |
This theorem was proved from axioms: ax-a1 30 ax-a2 31 ax-a3 32 ax-r1 35 ax-r2 36 ax-r4 37 ax-r5 38 |
This theorem depends on definitions: df-a 40 df-t 41 df-f 42 df-i1 44 |
This theorem is referenced by: u1lemn1b 730 |
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