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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 2180, ax-12 2216. (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 3628 | . 2 ⊢ (𝜑 → (𝐴 ∈ {𝑥 ∣ 𝜓} ↔ 𝜒)) |
| 5 | 1, 4 | bitrid 286 | 1 ⊢ (𝜑 → ([𝐴 / 𝑥]𝜓 ↔ 𝜒)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2147 {cab 2741 [wsbc 3742 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-sbc 3743 |
| This theorem is used by: sbcied2 3786 sbc2ie 3818 sbc2iedv 3819 sbc3ie 3820 sbcralt 3823 csbied 3887 euotd 5493 fmptsnd 7205 riota5f 7436 mpof1o2d 8174 fpwwe2lem11 10765 fpwwe2lem12 10766 brfi1uzind 14694 opfi1uzind 14697 sbcie3s 17384 issubc 18060 gsumvalx 18915 dmdprd 20265 dprdval 20270 isomnd 20388 issrg 20465 issrng 21152 isorng 21169 islmhm 21353 isphl 21989 istmd 24448 istgp 24451 isnlm 25049 isclm 25440 iscph 25546 iscms 25721 limcfval 26247 ewlksfval 30239 sbcies 33183 abfmpeld 33346 abfmpel 33347 isedom 33953 rprmval 34152 |
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