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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 2375 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | nfv 1577 | . 2 ⊢ Ⅎ𝑥𝜓 | |
| 3 | vtoclga.1 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | vtoclga.2 | . 2 ⊢ (𝑥 ∈ 𝐵 → 𝜑) | |
| 5 | 1, 2, 3, 4 | vtoclgaf 2870 | 1 ⊢ (𝐴 ∈ 𝐵 → 𝜓) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1398 ∈ wcel 2202 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-v 2805 |
| This theorem is referenced by: vtoclri 2882 ssuni 3920 ordtriexmid 4625 onsucsssucexmid 4631 tfis3 4690 fvmpt3 5734 fvmptssdm 5740 fnressn 5848 fressnfv 5849 caovord 6204 caovimo 6226 tfrlem1 6517 nnacl 6691 nnmcl 6692 nnacom 6695 nnaass 6696 nndi 6697 nnmass 6698 nnmsucr 6699 nnmcom 6700 nnsucsssuc 6703 nntri3or 6704 nnaordi 6719 nnaword 6722 nnmordi 6727 nnaordex 6739 ixpfn 6916 findcard 7120 findcard2 7121 findcard2s 7122 exmidomni 7401 indpi 7622 prarloclem3 7777 uzind4s2 9886 cnref1o 9946 frec2uzrdg 10734 expcl2lemap 10876 seq3coll 11169 climub 11984 climserle 11985 fsum3cvg 12019 summodclem2a 12022 prodfap0 12186 prodfrecap 12187 fproddccvg 12213 alginv 12699 algcvg 12700 algcvga 12703 algfx 12704 prmind2 12772 prmpwdvds 13008 lgsdir2lem4 15850 |
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