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Mirrors > Home > MPE Home > Th. List > sbcimg | Structured version Visualization version GIF version |
Description: Distribution of class substitution over implication. (Contributed by NM, 16-Jan-2004.) |
Ref | Expression |
---|---|
sbcimg | ⊢ (𝐴 ∈ 𝑉 → ([𝐴 / 𝑥](𝜑 → 𝜓) ↔ ([𝐴 / 𝑥]𝜑 → [𝐴 / 𝑥]𝜓))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfsbcq2 3775 | . 2 ⊢ (𝑦 = 𝐴 → ([𝑦 / 𝑥](𝜑 → 𝜓) ↔ [𝐴 / 𝑥](𝜑 → 𝜓))) | |
2 | dfsbcq2 3775 | . . 3 ⊢ (𝑦 = 𝐴 → ([𝑦 / 𝑥]𝜑 ↔ [𝐴 / 𝑥]𝜑)) | |
3 | dfsbcq2 3775 | . . 3 ⊢ (𝑦 = 𝐴 → ([𝑦 / 𝑥]𝜓 ↔ [𝐴 / 𝑥]𝜓)) | |
4 | 2, 3 | imbi12d 347 | . 2 ⊢ (𝑦 = 𝐴 → (([𝑦 / 𝑥]𝜑 → [𝑦 / 𝑥]𝜓) ↔ ([𝐴 / 𝑥]𝜑 → [𝐴 / 𝑥]𝜓))) |
5 | sbim 2307 | . 2 ⊢ ([𝑦 / 𝑥](𝜑 → 𝜓) ↔ ([𝑦 / 𝑥]𝜑 → [𝑦 / 𝑥]𝜓)) | |
6 | 1, 4, 5 | vtoclbg 3569 | 1 ⊢ (𝐴 ∈ 𝑉 → ([𝐴 / 𝑥](𝜑 → 𝜓) ↔ ([𝐴 / 𝑥]𝜑 → [𝐴 / 𝑥]𝜓))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 = wceq 1533 [wsb 2065 ∈ wcel 2110 [wsbc 3772 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-12 2172 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-ex 1777 df-nf 1781 df-sb 2066 df-clab 2800 df-cleq 2814 df-clel 2893 df-sbc 3773 |
This theorem is referenced by: sbcim1 3825 sbceqal 3835 sbc19.21g 3846 sbcssg 4463 iota4an 6332 sbcfung 6374 riotass2 7138 tfinds2 7572 telgsums 19107 bnj110 32125 bnj92 32129 bnj539 32158 bnj540 32159 f1omptsnlem 34611 mptsnunlem 34613 topdifinffinlem 34622 relowlpssretop 34639 rdgeqoa 34645 sbcimi 35382 cdlemkid3N 38063 cdlemkid4 38064 cdlemk35s 38067 cdlemk39s 38069 cdlemk42 38071 frege77 40279 frege116 40318 frege118 40320 sbcim2g 40865 onfrALTlem5 40869 sbcim2gVD 41202 sbcssgVD 41210 onfrALTlem5VD 41212 iccelpart 43586 |
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