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Mirrors > Home > QLE Home > Th. List > u1lem12 | Unicode version |
Description: Lemma used in study of orthoarguesian law. Equation 4.12 of [MegPav2000] p. 23. |
Ref | Expression |
---|---|
u1lem12 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-a1 30 | . . . 4 | |
2 | 1 | ud1lem0b 256 | . . 3 |
3 | 2 | ud1lem0b 256 | . 2 |
4 | u1lem11 780 | . 2 | |
5 | 3, 4 | ax-r2 36 | 1 |
Colors of variables: term |
Syntax hints: wb 1 wn 4 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: sac 835 oa4gto4u 976 lem4.6.4 1084 |
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