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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 3752 | . 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 3637 | . 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 3751 |
| 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 3752 |
| This theorem is referenced by: sbcied2 3795 sbc2ie 3826 sbc2iedv 3827 sbc3ie 3828 sbcralt 3832 csbied 3895 euotd 5497 fmptsnd 7168 riota5f 7396 mpof1o2d 8121 fpwwe2lem11 10626 fpwwe2lem12 10627 brfi1uzind 14545 opfi1uzind 14548 sbcie3s 17222 issubc 17892 gsumvalx 18734 dmdprd 20070 dprdval 20075 isomnd 20193 issrg 20270 issrng 20925 isorng 20942 islmhm 21126 isphl 21747 istmd 24200 istgp 24203 isnlm 24801 isclm 25192 iscph 25298 iscms 25473 limcfval 26000 ewlksfval 29892 sbcies 32775 abfmpeld 32940 abfmpel 32941 rprmval 33751 |
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