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Mirrors > Home > ILE Home > Th. List > csbexga | Unicode version |
Description: The existence of proper substitution into a class. (Contributed by NM, 10-Nov-2005.) |
Ref | Expression |
---|---|
csbexga |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-csb 2909 | . 2 | |
2 | abid2 2199 | . . . . . . 7 | |
3 | elex 2610 | . . . . . . 7 | |
4 | 2, 3 | syl5eqel 2165 | . . . . . 6 |
5 | 4 | alimi 1384 | . . . . 5 |
6 | spsbc 2826 | . . . . 5 | |
7 | 5, 6 | syl5 32 | . . . 4 |
8 | 7 | imp 122 | . . 3 |
9 | nfcv 2219 | . . . . 5 | |
10 | 9 | sbcabel 2895 | . . . 4 |
11 | 10 | adantr 270 | . . 3 |
12 | 8, 11 | mpbid 145 | . 2 |
13 | 1, 12 | syl5eqel 2165 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 102 wb 103 wal 1282 wcel 1433 cab 2067 cvv 2601 wsbc 2815 csb 2908 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 |
This theorem depends on definitions: df-bi 115 df-tru 1287 df-nf 1390 df-sb 1686 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-v 2603 df-sbc 2816 df-csb 2909 |
This theorem is referenced by: csbexa 3907 |
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