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| Mirrors > Home > MPE Home > Th. List > sbcied | Structured version Visualization version GIF version | ||
| Description: Conversion of implicit substitution to explicit class substitution, deduction form. (Contributed by NM, 13-Dec-2014.) Avoid ax-10 2147, ax-12 2185. (Revised by GG, 12-Oct-2024.) |
| Ref | Expression |
|---|---|
| sbcied.1 | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
| sbcied.2 | ⊢ ((𝜑 ∧ 𝑥 = 𝐴) → (𝜓 ↔ 𝜒)) |
| Ref | Expression |
|---|---|
| sbcied | ⊢ (𝜑 → ([𝐴 / 𝑥]𝜓 ↔ 𝜒)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-sbc 3743 | . 2 ⊢ ([𝐴 / 𝑥]𝜓 ↔ 𝐴 ∈ {𝑥 ∣ 𝜓}) | |
| 2 | sbcied.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
| 3 | sbcied.2 | . . 3 ⊢ ((𝜑 ∧ 𝑥 = 𝐴) → (𝜓 ↔ 𝜒)) | |
| 4 | 2, 3 | elabd3 3627 | . 2 ⊢ (𝜑 → (𝐴 ∈ {𝑥 ∣ 𝜓} ↔ 𝜒)) |
| 5 | 1, 4 | bitrid 283 | 1 ⊢ (𝜑 → ([𝐴 / 𝑥]𝜓 ↔ 𝜒)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1542 ∈ wcel 2114 {cab 2715 [wsbc 3742 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-sbc 3743 |
| This theorem is referenced by: sbcied2 3787 sbc2ie 3818 sbc2iedv 3819 sbc3ie 3820 sbcralt 3824 csbied 3887 euotd 5469 fmptsnd 7125 riota5f 7353 fpwwe2lem11 10564 fpwwe2lem12 10565 brfi1uzind 14443 opfi1uzind 14446 sbcie3s 17101 issubc 17771 gsumvalx 18613 dmdprd 19941 dprdval 19946 isomnd 20064 issrg 20135 issrng 20789 isorng 20806 islmhm 20991 isphl 21595 istmd 24030 istgp 24033 isnlm 24631 isclm 25032 iscph 25138 iscms 25313 limcfval 25841 ewlksfval 29687 sbcies 32573 abfmpeld 32743 abfmpel 32744 rprmval 33608 f1o2d2 42602 |
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