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Related theorems GIF version |
| Description: Implicit substitution of a class for a set variable. |
| Ref | Expression |
|---|---|
| vtoclg.1 | ⊢ (x = A → (φ ↔ ψ)) |
| vtoclg.2 | ⊢ φ |
| Ref | Expression |
|---|---|
| vtoclg | ⊢ (A ∈ B → ψ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-17 925 | . 2 ⊢ (y ∈ A → ∀x y ∈ A) | |
| 2 | ax-17 925 | . 2 ⊢ (ψ → ∀xψ) | |
| 3 | vtoclg.1 | . 2 ⊢ (x = A → (φ ↔ ψ)) | |
| 4 | vtoclg.2 | . 2 ⊢ φ | |
| 5 | 1, 2, 3, 4 | vtoclgf 1382 | 1 ⊢ (A ∈ B → ψ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ↔ wb 127 = wceq 1091 ∈ wcel 1092 |
| This theorem is referenced by: vtoclbg 1384 vtoclga 1387 ceqex 1410 moeq3 1432 mo2icl 1434 inex1g 1699 ssexg 1702 elpwg 1802 pwexg 1807 snex 1859 prex 1892 opprc1b 1906 opth2 1909 unisng 1933 uniexg 1948 elintg 1973 trel 2048 trss 2050 efrirr 2180 ordelord 2221 sucidg 2305 vtoclr 2449 vtoclrbr 2450 vtoclibr 2451 resieq 2581 eliniseg 2618 funimaexg 2715 fneu 2728 fconstg 2775 tz6.12-2 2845 tz6.12i 2847 funopfvg 2854 fnfvbr 2855 fvelima 2859 fvelrn 2883 fvrn 2888 fvi 2900 abrexexg 2913 tfrlem10 2958 rdgzert 2982 domeng 3285 ensn1g 3330 en2sn 3336 snfi 3337 canth2g 3382 php2 3410 eirr 3450 tz9.13g 3508 rankvalg 3513 rankr1g 3519 r1pw 3529 ac7g 3570 numth2 3600 numthcor 3601 fodomg 3614 sucxpdom 3652 prnmax 3893 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-12 802 ax-17 925 ax-ext 1074 |
| This theorem depends on definitions: df-bi 128 df-an 198 df-ex 679 df-sb 853 df-clab 1093 df-cleq 1097 df-clel 1099 df-v 1349 |