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Mirrors > Home > ILE Home > Th. List > vtoclg | GIF version |
Description: Implicit substitution of a class expression for a setvar variable. (Contributed by NM, 17-Apr-1995.) |
Ref | Expression |
---|---|
vtoclg.1 | ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) |
vtoclg.2 | ⊢ 𝜑 |
Ref | Expression |
---|---|
vtoclg | ⊢ (𝐴 ∈ 𝑉 → 𝜓) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfcv 2282 | . 2 ⊢ Ⅎ𝑥𝐴 | |
2 | nfv 1509 | . 2 ⊢ Ⅎ𝑥𝜓 | |
3 | vtoclg.1 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
4 | vtoclg.2 | . 2 ⊢ 𝜑 | |
5 | 1, 2, 3, 4 | vtoclgf 2747 | 1 ⊢ (𝐴 ∈ 𝑉 → 𝜓) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ↔ wb 104 = wceq 1332 ∈ wcel 1481 |
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 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-v 2691 |
This theorem is referenced by: vtoclbg 2750 ceqex 2816 mo2icl 2867 nelrdva 2895 sbctt 2979 sbcnestgf 3056 csbing 3288 ifmdc 3514 prnzg 3655 sneqrg 3697 unisng 3761 csbopabg 4014 trss 4043 inex1g 4072 ssexg 4075 pwexg 4112 prexg 4141 opth 4167 ordelord 4311 uniexg 4369 vtoclr 4595 resieq 4837 csbima12g 4908 dmsnsnsng 5024 iota5 5116 csbiotag 5124 funmo 5146 fconstg 5327 funfveu 5442 funbrfv 5468 fnbrfvb 5470 fvelimab 5485 ssimaexg 5491 fvelrn 5559 isoselem 5729 csbriotag 5750 csbov123g 5817 ovg 5917 tfrexlem 6239 rdg0g 6293 ensn1g 6699 fundmeng 6709 xpdom2g 6734 phplem3g 6758 prcdnql 7316 prcunqu 7317 prdisj 7324 shftvalg 10640 shftval4g 10641 climshft 11105 telfsumo 11267 fsumparts 11271 lcmgcdlem 11794 fiinopn 12210 bdzfauscl 13259 bdinex1g 13270 bdssexg 13273 bj-prexg 13280 bj-uniexg 13287 |
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