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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 2386 | . 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 2882 | 1 ⊢ (𝐴 ∈ 𝐵 → 𝜓) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1398 ∈ wcel 2205 |
| 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 2216 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-v 2817 |
| This theorem is referenced by: vtoclri 2894 ssuni 3941 ordtriexmid 4648 onsucsssucexmid 4654 tfis3 4713 fvmpt3 5761 fvmptssdm 5767 fnressn 5875 fressnfv 5876 caovord 6234 caovimo 6256 tfrlem1 6552 nnacl 6726 nnmcl 6727 nnacom 6730 nnaass 6731 nndi 6732 nnmass 6733 nnmsucr 6734 nnmcom 6735 nnsucsssuc 6738 nntri3or 6739 nnaordi 6754 nnaword 6757 nnmordi 6762 nnaordex 6774 ixpfn 6952 findcard 7158 findcard2 7159 findcard2s 7160 exmidomni 7446 indpi 7673 prarloclem3 7828 uzind4s2 9941 cnref1o 10001 frec2uzrdg 10795 expcl2lemap 10937 seq3coll 11239 climub 12054 climserle 12055 fsum3cvg 12089 summodclem2a 12092 prodfap0 12256 prodfrecap 12257 fproddccvg 12283 alginv 12769 algcvg 12770 algcvga 12773 algfx 12774 prmind2 12842 prmpwdvds 13078 lgsdir2lem4 16030 |
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