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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 2375 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | nfv 1577 | . 2 ⊢ Ⅎ𝑥𝜓 | |
| 3 | vtoclg.1 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | vtoclg.2 | . 2 ⊢ 𝜑 | |
| 5 | 1, 2, 3, 4 | vtoclgf 2863 | 1 ⊢ (𝐴 ∈ 𝑉 → 𝜓) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1398 ∈ wcel 2202 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-v 2805 |
| This theorem is referenced by: vtoclbg 2866 ceqex 2934 mo2icl 2986 nelrdva 3014 sbctt 3099 sbcnestgf 3180 csbing 3416 ifmdc 3652 prnzg 3801 sneqrg 3850 unisng 3915 csbopabg 4172 trss 4201 inex1g 4230 ssexg 4233 pwexg 4276 prexg 4307 opth 4335 ordelord 4484 uniexg 4542 vtoclr 4780 resieq 5029 csbima12g 5104 dmsnsnsng 5221 iotaexab 5312 iota5 5315 csbiotag 5326 funmo 5348 fconstg 5542 funfveu 5661 funbrfv 5691 fnbrfvb 5693 fvelimab 5711 ssimaexg 5717 fvelrn 5786 isoselem 5971 csbriotag 5995 csbov123g 6067 ovg 6171 tfrexlem 6543 rdg0g 6597 ensn1g 7014 fundmeng 7025 xpdom2g 7059 phplem3g 7085 prcdnql 7747 prcunqu 7748 prdisj 7755 shftvalg 11459 shftval4g 11460 climshft 11927 telfsumo 12090 fsumparts 12094 lcmgcdlem 12712 fiinopn 14798 bdzfauscl 16589 bdinex1g 16600 bdssexg 16603 bj-prexg 16610 bj-uniexg 16617 |
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