| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 2860 | 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 2802 |
| This theorem is referenced by: vtoclbg 2863 ceqex 2931 mo2icl 2983 nelrdva 3011 sbctt 3096 sbcnestgf 3177 csbing 3412 ifmdc 3646 prnzg 3795 sneqrg 3843 unisng 3908 csbopabg 4165 trss 4194 inex1g 4223 ssexg 4226 pwexg 4268 prexg 4299 opth 4327 ordelord 4476 uniexg 4534 vtoclr 4772 resieq 5021 csbima12g 5095 dmsnsnsng 5212 iotaexab 5303 iota5 5306 csbiotag 5317 funmo 5339 fconstg 5530 funfveu 5648 funbrfv 5678 fnbrfvb 5680 fvelimab 5698 ssimaexg 5704 fvelrn 5774 isoselem 5956 csbriotag 5980 csbov123g 6052 ovg 6156 tfrexlem 6495 rdg0g 6549 ensn1g 6966 fundmeng 6977 xpdom2g 7011 phplem3g 7037 prcdnql 7694 prcunqu 7695 prdisj 7702 shftvalg 11387 shftval4g 11388 climshft 11855 telfsumo 12017 fsumparts 12021 lcmgcdlem 12639 fiinopn 14718 bdzfauscl 16421 bdinex1g 16432 bdssexg 16435 bj-prexg 16442 bj-uniexg 16449 |
| Copyright terms: Public domain | W3C validator |