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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 2142, ax-12 2178. (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 3757 | . 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 3640 | . 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 1540 ∈ wcel 2109 {cab 2708 [wsbc 3756 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-ext 2702 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1543 df-ex 1780 df-sb 2066 df-clab 2709 df-cleq 2722 df-clel 2804 df-sbc 3757 |
| This theorem is referenced by: sbcied2 3801 sbc2ie 3832 sbc2iedv 3833 sbc3ie 3834 sbcralt 3838 csbied 3901 euotd 5476 fmptsnd 7146 riota5f 7375 fpwwe2lem11 10601 fpwwe2lem12 10602 brfi1uzind 14480 opfi1uzind 14483 sbcie3s 17139 issubc 17804 gsumvalx 18610 dmdprd 19937 dprdval 19942 issrg 20104 issrng 20760 islmhm 20941 isphl 21544 istmd 23968 istgp 23971 isnlm 24570 isclm 24971 iscph 25077 iscms 25252 limcfval 25780 ewlksfval 29536 sbcies 32424 abfmpeld 32585 abfmpel 32586 isomnd 33022 isorng 33284 rprmval 33494 f1o2d2 42228 |
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