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Mirrors > Home > ILE Home > Th. List > clelab | Unicode version |
Description: Membership of a class variable in a class abstraction. (Contributed by NM, 23-Dec-1993.) |
Ref | Expression |
---|---|
clelab |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-clab 2126 | . . . 4 | |
2 | 1 | anbi2i 452 | . . 3 |
3 | 2 | exbii 1584 | . 2 |
4 | df-clel 2135 | . 2 | |
5 | nfv 1508 | . . 3 | |
6 | nfv 1508 | . . . 4 | |
7 | nfs1v 1912 | . . . 4 | |
8 | 6, 7 | nfan 1544 | . . 3 |
9 | eqeq1 2146 | . . . 4 | |
10 | sbequ12 1744 | . . . 4 | |
11 | 9, 10 | anbi12d 464 | . . 3 |
12 | 5, 8, 11 | cbvex 1729 | . 2 |
13 | 3, 4, 12 | 3bitr4i 211 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 103 wb 104 wceq 1331 wex 1468 wcel 1480 wsb 1735 cab 2125 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-11 1484 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-ext 2121 |
This theorem depends on definitions: df-bi 116 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 |
This theorem is referenced by: elrabi 2837 |
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