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| Mirrors > Home > ILE Home > Th. List > vtoclga | GIF version | ||
| Description: Implicit substitution of a class for a setvar variable. (Contributed by NM, 20-Aug-1995.) |
| Ref | Expression |
|---|---|
| vtoclga.1 | ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) |
| vtoclga.2 | ⊢ (𝑥 ∈ 𝐵 → 𝜑) |
| Ref | Expression |
|---|---|
| vtoclga | ⊢ (𝐴 ∈ 𝐵 → 𝜓) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nfcv 2372 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | nfv 1574 | . 2 ⊢ Ⅎ𝑥𝜓 | |
| 3 | vtoclga.1 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | vtoclga.2 | . 2 ⊢ (𝑥 ∈ 𝐵 → 𝜑) | |
| 5 | 1, 2, 3, 4 | vtoclgaf 2866 | 1 ⊢ (𝐴 ∈ 𝐵 → 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: vtoclri 2878 ssuni 3910 ordtriexmid 4613 onsucsssucexmid 4619 tfis3 4678 fvmpt3 5715 fvmptssdm 5721 fnressn 5829 fressnfv 5830 caovord 6183 caovimo 6205 tfrlem1 6460 nnacl 6634 nnmcl 6635 nnacom 6638 nnaass 6639 nndi 6640 nnmass 6641 nnmsucr 6642 nnmcom 6643 nnsucsssuc 6646 nntri3or 6647 nnaordi 6662 nnaword 6665 nnmordi 6670 nnaordex 6682 ixpfn 6859 findcard 7058 findcard2 7059 findcard2s 7060 exmidomni 7320 indpi 7540 prarloclem3 7695 uzind4s2 9798 cnref1o 9858 frec2uzrdg 10643 expcl2lemap 10785 seq3coll 11077 climub 11871 climserle 11872 fsum3cvg 11905 summodclem2a 11908 prodfap0 12072 prodfrecap 12073 fproddccvg 12099 alginv 12585 algcvg 12586 algcvga 12589 algfx 12590 prmind2 12658 prmpwdvds 12894 lgsdir2lem4 15726 |
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