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Mirrors > Home > QLE Home > Th. List > oa4btoc | Unicode version |
Description: Derivation of 4-OA law variant. |
Ref | Expression |
---|---|
oa4btoc.1 |
Ref | Expression |
---|---|
oa4btoc |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | leo 158 | . . . 4 | |
2 | df-i1 44 | . . . . 5 | |
3 | 2 | ax-r1 35 | . . . 4 |
4 | 1, 3 | lbtr 139 | . . 3 |
5 | leid 148 | . . . . . 6 | |
6 | 5 | lelor 166 | . . . . 5 |
7 | 6 | lelan 167 | . . . 4 |
8 | 7 | lelor 166 | . . 3 |
9 | 4, 8 | le2an 169 | . 2 |
10 | oa4btoc.1 | . 2 | |
11 | 9, 10 | letr 137 | 1 |
Colors of variables: term |
Syntax hints: 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-a5 34 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 df-le1 130 df-le2 131 |
This theorem is referenced by: (None) |
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