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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 4265 prexg 4296 opth 4324 ordelord 4473 uniexg 4531 vtoclr 4769 resieq 5018 csbima12g 5092 dmsnsnsng 5209 iotaexab 5300 iota5 5303 csbiotag 5314 funmo 5336 fconstg 5527 funfveu 5645 funbrfv 5675 fnbrfvb 5677 fvelimab 5695 ssimaexg 5701 fvelrn 5771 isoselem 5953 csbriotag 5977 csbov123g 6049 ovg 6153 tfrexlem 6491 rdg0g 6545 ensn1g 6962 fundmeng 6973 xpdom2g 7004 phplem3g 7030 prcdnql 7687 prcunqu 7688 prdisj 7695 shftvalg 11368 shftval4g 11369 climshft 11836 telfsumo 11998 fsumparts 12002 lcmgcdlem 12620 fiinopn 14699 bdzfauscl 16362 bdinex1g 16373 bdssexg 16376 bj-prexg 16383 bj-uniexg 16390 |
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