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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 2374 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | nfv 1576 | . 2 ⊢ Ⅎ𝑥𝜓 | |
| 3 | vtoclg.1 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | vtoclg.2 | . 2 ⊢ 𝜑 | |
| 5 | 1, 2, 3, 4 | vtoclgf 2862 | 1 ⊢ (𝐴 ∈ 𝑉 → 𝜓) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1397 ∈ 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-v 2804 |
| This theorem is referenced by: vtoclbg 2865 ceqex 2933 mo2icl 2985 nelrdva 3013 sbctt 3098 sbcnestgf 3179 csbing 3414 ifmdc 3648 prnzg 3797 sneqrg 3845 unisng 3910 csbopabg 4167 trss 4196 inex1g 4225 ssexg 4228 pwexg 4270 prexg 4301 opth 4329 ordelord 4478 uniexg 4536 vtoclr 4774 resieq 5023 csbima12g 5097 dmsnsnsng 5214 iotaexab 5305 iota5 5308 csbiotag 5319 funmo 5341 fconstg 5533 funfveu 5652 funbrfv 5682 fnbrfvb 5684 fvelimab 5702 ssimaexg 5708 fvelrn 5778 isoselem 5961 csbriotag 5985 csbov123g 6057 ovg 6161 tfrexlem 6500 rdg0g 6554 ensn1g 6971 fundmeng 6982 xpdom2g 7016 phplem3g 7042 prcdnql 7704 prcunqu 7705 prdisj 7712 shftvalg 11401 shftval4g 11402 climshft 11869 telfsumo 12032 fsumparts 12036 lcmgcdlem 12654 fiinopn 14734 bdzfauscl 16511 bdinex1g 16522 bdssexg 16525 bj-prexg 16532 bj-uniexg 16539 |
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