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Mirrors > Home > ILE Home > Th. List > eqrel | Unicode version |
Description: Extensionality principle for relations. Theorem 3.2(ii) of [Monk1] p. 33. (Contributed by NM, 2-Aug-1994.) |
Ref | Expression |
---|---|
eqrel |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssrel 4692 | . . 3 | |
2 | ssrel 4692 | . . 3 | |
3 | 1, 2 | bi2anan9 596 | . 2 |
4 | eqss 3157 | . 2 | |
5 | 2albiim 1476 | . 2 | |
6 | 3, 4, 5 | 3bitr4g 222 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wb 104 wal 1341 wceq 1343 wcel 2136 wss 3116 cop 3579 wrel 4609 |
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-v 2728 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-opab 4044 df-xp 4610 df-rel 4611 |
This theorem is referenced by: eqrelriv 4697 eqrelrdv 4700 eqbrrdv 4701 eqrelrdv2 4703 opabid2 4735 reldm0 4822 iss 4930 asymref 4989 funssres 5230 fsn 5657 |
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