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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 2182, ax-12 2219. (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 3754 | . 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 3639 | . 2 ⊢ (𝜑 → (𝐴 ∈ {𝑥 ∣ 𝜓} ↔ 𝜒)) |
| 5 | 1, 4 | bitrid 286 | 1 ⊢ (𝜑 → ([𝐴 / 𝑥]𝜓 ↔ 𝜒)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 ∧ wa 400 = wceq 1567 ∈ wcel 2149 {cab 2747 [wsbc 3753 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-ext 2741 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-tru 1570 df-ex 1807 df-sb 2098 df-clab 2748 df-cleq 2761 df-clel 2844 df-sbc 3754 |
| This theorem is referenced by: sbcied2 3797 sbc2ie 3828 sbc2iedv 3829 sbc3ie 3830 sbcralt 3834 csbied 3897 euotd 5494 fmptsnd 7165 riota5f 7393 mpof1o2d 8117 fpwwe2lem11 10622 fpwwe2lem12 10623 brfi1uzind 14541 opfi1uzind 14544 sbcie3s 17218 issubc 17888 gsumvalx 18730 dmdprd 20066 dprdval 20071 isomnd 20189 issrg 20266 issrng 20921 isorng 20938 islmhm 21122 isphl 21743 istmd 24196 istgp 24199 isnlm 24797 isclm 25188 iscph 25294 iscms 25469 limcfval 25996 ewlksfval 29888 sbcies 32771 abfmpeld 32936 abfmpel 32937 rprmval 33747 |
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