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Mirrors > Home > ILE Home > Th. List > cnvuni | Unicode version |
Description: The converse of a class union is the (indexed) union of the converses of its members. (Contributed by NM, 11-Aug-2004.) |
Ref | Expression |
---|---|
cnvuni |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elcnv2 4782 | . . . 4 | |
2 | eluni2 3793 | . . . . . . 7 | |
3 | 2 | anbi2i 453 | . . . . . 6 |
4 | r19.42v 2623 | . . . . . 6 | |
5 | 3, 4 | bitr4i 186 | . . . . 5 |
6 | 5 | 2exbii 1594 | . . . 4 |
7 | elcnv2 4782 | . . . . . 6 | |
8 | 7 | rexbii 2473 | . . . . 5 |
9 | rexcom4 2749 | . . . . 5 | |
10 | rexcom4 2749 | . . . . . 6 | |
11 | 10 | exbii 1593 | . . . . 5 |
12 | 8, 9, 11 | 3bitrri 206 | . . . 4 |
13 | 1, 6, 12 | 3bitri 205 | . . 3 |
14 | eliun 3870 | . . 3 | |
15 | 13, 14 | bitr4i 186 | . 2 |
16 | 15 | eqriv 2162 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 103 wceq 1343 wex 1480 wcel 2136 wrex 2445 cop 3579 cuni 3789 ciun 3866 ccnv 4603 |
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-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-nf 1449 df-sb 1751 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ral 2449 df-rex 2450 df-v 2728 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-iun 3868 df-br 3983 df-opab 4044 df-cnv 4612 |
This theorem is referenced by: funcnvuni 5257 |
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