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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 2152, ax-12 2189. (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 3731 | . 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 3616 | . 2 ⊢ (𝜑 → (𝐴 ∈ {𝑥 ∣ 𝜓} ↔ 𝜒)) |
| 5 | 1, 4 | bitrid 284 | 1 ⊢ (𝜑 → ([𝐴 / 𝑥]𝜓 ↔ 𝜒)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 207 ∧ wa 396 = wceq 1547 ∈ wcel 2119 {cab 2718 [wsbc 3730 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2712 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-tru 1550 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-sbc 3731 |
| This theorem is referenced by: sbcied2 3774 sbc2ie 3805 sbc2iedv 3806 sbc3ie 3807 sbcralt 3811 csbied 3874 euotd 5461 fmptsnd 7120 riota5f 7348 mpof1o2d 8072 fpwwe2lem11 10562 fpwwe2lem12 10563 brfi1uzind 14468 opfi1uzind 14471 sbcie3s 17130 issubc 17800 gsumvalx 18642 dmdprd 19973 dprdval 19978 isomnd 20096 issrg 20167 issrng 20823 isorng 20840 islmhm 21024 isphl 21610 istmd 24064 istgp 24067 isnlm 24665 isclm 25056 iscph 25162 iscms 25337 limcfval 25864 ewlksfval 29695 sbcies 32582 abfmpeld 32753 abfmpel 32754 rprmval 33606 |
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