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Mirrors > Home > ILE Home > Th. List > Mathboxes > sscoll2 | Unicode version |
Description: Version of ax-sscoll 10112 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 1421 | . . 3 | |
2 | nfv 1421 | . . . 4 | |
3 | simpl 102 | . . . . . 6 | |
4 | rexeq 2506 | . . . . . . 7 | |
5 | 4 | adantl 262 | . . . . . 6 |
6 | 3, 5 | raleqbidv 2517 | . . . . 5 |
7 | nfv 1421 | . . . . . 6 | |
8 | nfv 1421 | . . . . . . 7 | |
9 | rexeq 2506 | . . . . . . . . 9 | |
10 | 9 | adantr 261 | . . . . . . . 8 |
11 | 10 | bibi2d 221 | . . . . . . 7 |
12 | 8, 11 | albid 1506 | . . . . . 6 |
13 | 7, 12 | rexbid 2325 | . . . . 5 |
14 | 6, 13 | imbi12d 223 | . . . 4 |
15 | 2, 14 | albid 1506 | . . 3 |
16 | 1, 15 | exbid 1507 | . 2 |
17 | ax-sscoll 10112 | . . . 4 | |
18 | 17 | spi 1429 | . . 3 |
19 | 18 | spi 1429 | . 2 |
20 | 16, 19 | ch2varv 9908 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 97 wb 98 wal 1241 wex 1381 wral 2306 wrex 2307 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-sscoll 10112 |
This theorem depends on definitions: df-bi 110 df-tru 1246 df-nf 1350 df-sb 1646 df-cleq 2033 df-clel 2036 df-nfc 2167 df-ral 2311 df-rex 2312 |
This theorem is referenced by: (None) |
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