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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 2372 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | nfv 1574 | . 2 ⊢ Ⅎ𝑥𝜓 | |
| 3 | vtoclg.1 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | vtoclg.2 | . 2 ⊢ 𝜑 | |
| 5 | 1, 2, 3, 4 | vtoclgf 2859 | 1 ⊢ (𝐴 ∈ 𝑉 → 𝜓) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1395 ∈ wcel 2200 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-v 2801 |
| This theorem is referenced by: vtoclbg 2862 ceqex 2930 mo2icl 2982 nelrdva 3010 sbctt 3095 sbcnestgf 3176 csbing 3411 ifmdc 3645 prnzg 3792 sneqrg 3840 unisng 3905 csbopabg 4162 trss 4191 inex1g 4220 ssexg 4223 pwexg 4264 prexg 4295 opth 4323 ordelord 4472 uniexg 4530 vtoclr 4767 resieq 5015 csbima12g 5089 dmsnsnsng 5206 iotaexab 5297 iota5 5300 csbiotag 5311 funmo 5333 fconstg 5524 funfveu 5642 funbrfv 5672 fnbrfvb 5674 fvelimab 5692 ssimaexg 5698 fvelrn 5768 isoselem 5950 csbriotag 5974 csbov123g 6046 ovg 6150 tfrexlem 6486 rdg0g 6540 ensn1g 6957 fundmeng 6968 xpdom2g 6999 phplem3g 7025 prcdnql 7682 prcunqu 7683 prdisj 7690 shftvalg 11362 shftval4g 11363 climshft 11830 telfsumo 11992 fsumparts 11996 lcmgcdlem 12614 fiinopn 14693 bdzfauscl 16308 bdinex1g 16319 bdssexg 16322 bj-prexg 16329 bj-uniexg 16336 |
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