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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 2392 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | nfv 1581 | . 2 ⊢ Ⅎ𝑥𝜓 | |
| 3 | vtoclga.1 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | vtoclga.2 | . 2 ⊢ (𝑥 ∈ 𝐵 → 𝜑) | |
| 5 | 1, 2, 3, 4 | vtoclgaf 2888 | 1 ⊢ (𝐴 ∈ 𝐵 → 𝜓) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1402 ∈ wcel 2209 |
| 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 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 |
| This theorem is referenced by: vtoclri 2900 ssuni 3952 ordtriexmid 4663 onsucsssucexmid 4669 tfis3 4728 fvmpt3 5778 fvmptssdm 5784 fnressn 5892 fressnfv 5893 caovord 6251 caovimo 6273 tfrlem1 6569 nnacl 6743 nnmcl 6744 nnacom 6747 nnaass 6748 nndi 6749 nnmass 6750 nnmsucr 6751 nnmcom 6752 nnsucsssuc 6755 nntri3or 6756 nnaordi 6771 nnaword 6774 nnmordi 6779 nnaordex 6791 ixpfn 6976 findcard 7182 findcard2 7183 findcard2s 7184 exmidomni 7472 indpi 7699 prarloclem3 7854 uzind4s2 9970 cnref1o 10030 frec2uzrdg 10824 expcl2lemap 10966 seq3coll 11272 climub 12088 climserle 12089 fsum3cvg 12123 summodclem2a 12126 prodfap0 12290 prodfrecap 12291 fproddccvg 12317 alginv 12803 algcvg 12804 algcvga 12807 algfx 12808 prmind2 12876 prmpwdvds 13112 lgsdir2lem4 16064 |
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