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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 2392 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | nfv 1581 | . 2 ⊢ Ⅎ𝑥𝜓 | |
| 3 | vtoclg.1 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | vtoclg.2 | . 2 ⊢ 𝜑 | |
| 5 | 1, 2, 3, 4 | vtoclgf 2881 | 1 ⊢ (𝐴 ∈ 𝑉 → 𝜓) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1402 ∈ wcel 2209 |
| 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 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 |
| This theorem is referenced by: vtoclbg 2884 ceqex 2953 mo2icl 3005 nelrdva 3033 sbctt 3118 sbcnestgf 3199 csbing 3438 ifmdc 3680 prnzg 3833 sneqrg 3882 unisng 3947 csbopabg 4204 trss 4233 sepg 4246 inex1g 4264 ssexg 4267 pwexg 4312 prexg 4344 opth 4372 ordelord 4521 uniexg 4580 vtoclr 4818 resieq 5068 csbima12g 5143 dmsnsnsng 5260 iotaexab 5351 iota5 5354 csbiotag 5365 funmo 5387 fconstg 5584 funfveu 5703 funbrfv 5733 fnbrfvb 5735 fvelimab 5753 ssimaexg 5759 fvelrn 5830 isoselem 6016 csbriotag 6042 csbov123g 6114 ovg 6218 tfrexlem 6595 rdg0g 6649 ensn1g 7074 fundmeng 7085 xpdom2g 7120 phplem3g 7147 prcdnql 7841 prcunqu 7842 prdisj 7849 shftvalg 11579 shftval4g 11580 climshft 12048 telfsumo 12211 fsumparts 12215 lcmgcdlem 12833 fiinopn 15028 bdsepg 16830 bdinex1g 16841 bdssexg 16844 bj-prexg 16851 bj-uniexg 16858 |
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