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Mirrors > Home > ILE Home > Th. List > Mathboxes > sscoll2 | Unicode version |
Description: Version of ax-sscoll 10782 with two DV conditions removed and without initial universal quantifiers. (Contributed by BJ, 5-Oct-2019.) |
Ref | Expression |
---|---|
sscoll2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfv 1461 | . . 3 | |
2 | nfv 1461 | . . . 4 | |
3 | simpl 107 | . . . . . 6 | |
4 | rexeq 2550 | . . . . . . 7 | |
5 | 4 | adantl 271 | . . . . . 6 |
6 | 3, 5 | raleqbidv 2561 | . . . . 5 |
7 | nfv 1461 | . . . . . 6 | |
8 | nfv 1461 | . . . . . . 7 | |
9 | rexeq 2550 | . . . . . . . . 9 | |
10 | 9 | adantr 270 | . . . . . . . 8 |
11 | 10 | bibi2d 230 | . . . . . . 7 |
12 | 8, 11 | albid 1546 | . . . . . 6 |
13 | 7, 12 | rexbid 2367 | . . . . 5 |
14 | 6, 13 | imbi12d 232 | . . . 4 |
15 | 2, 14 | albid 1546 | . . 3 |
16 | 1, 15 | exbid 1547 | . 2 |
17 | ax-sscoll 10782 | . . . 4 | |
18 | 17 | spi 1469 | . . 3 |
19 | 18 | spi 1469 | . 2 |
20 | 16, 19 | ch2varv 10579 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 102 wb 103 wal 1282 wex 1421 wral 2348 wrex 2349 |
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 ax-sscoll 10782 |
This theorem depends on definitions: df-bi 115 df-tru 1287 df-nf 1390 df-sb 1686 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ral 2353 df-rex 2354 |
This theorem is referenced by: (None) |
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