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Mirrors > Home > HSE Home > Th. List > df-leop | Structured version Visualization version Unicode version |
Description: Define positive operator ordering. Definition VI.1 of [Retherford] p. 49. Note that means that is a positive operator. (Contributed by NM, 23-Jul-2006.) (New usage is discouraged.) |
Ref | Expression |
---|---|
df-leop |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cleo 27815 | . 2 | |
2 | vu | . . . . . . 7 | |
3 | 2 | cv 1482 | . . . . . 6 |
4 | vt | . . . . . . 7 | |
5 | 4 | cv 1482 | . . . . . 6 |
6 | chod 27797 | . . . . . 6 | |
7 | 3, 5, 6 | co 6650 | . . . . 5 |
8 | cho 27807 | . . . . 5 | |
9 | 7, 8 | wcel 1990 | . . . 4 |
10 | cc0 9936 | . . . . . 6 | |
11 | vx | . . . . . . . . 9 | |
12 | 11 | cv 1482 | . . . . . . . 8 |
13 | 12, 7 | cfv 5888 | . . . . . . 7 |
14 | csp 27779 | . . . . . . 7 | |
15 | 13, 12, 14 | co 6650 | . . . . . 6 |
16 | cle 10075 | . . . . . 6 | |
17 | 10, 15, 16 | wbr 4653 | . . . . 5 |
18 | chil 27776 | . . . . 5 | |
19 | 17, 11, 18 | wral 2912 | . . . 4 |
20 | 9, 19 | wa 384 | . . 3 |
21 | 20, 4, 2 | copab 4712 | . 2 |
22 | 1, 21 | wceq 1483 | 1 |
Colors of variables: wff setvar class |
This definition is referenced by: leopg 28981 |
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