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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 2867 | 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 2802 |
| This theorem is referenced by: vtoclri 2879 ssuni 3913 ordtriexmid 4617 onsucsssucexmid 4623 tfis3 4682 fvmpt3 5721 fvmptssdm 5727 fnressn 5835 fressnfv 5836 caovord 6189 caovimo 6211 tfrlem1 6469 nnacl 6643 nnmcl 6644 nnacom 6647 nnaass 6648 nndi 6649 nnmass 6650 nnmsucr 6651 nnmcom 6652 nnsucsssuc 6655 nntri3or 6656 nnaordi 6671 nnaword 6674 nnmordi 6679 nnaordex 6691 ixpfn 6868 findcard 7070 findcard2 7071 findcard2s 7072 exmidomni 7332 indpi 7552 prarloclem3 7707 uzind4s2 9815 cnref1o 9875 frec2uzrdg 10661 expcl2lemap 10803 seq3coll 11096 climub 11895 climserle 11896 fsum3cvg 11929 summodclem2a 11932 prodfap0 12096 prodfrecap 12097 fproddccvg 12123 alginv 12609 algcvg 12610 algcvga 12613 algfx 12614 prmind2 12682 prmpwdvds 12918 lgsdir2lem4 15750 |
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