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| Mirrors > Home > MPE Home > Th. List > elab2g | Structured version Visualization version GIF version | ||
| Description: Membership in a class abstraction, using implicit substitution. (Contributed by NM, 13-Sep-1995.) |
| Ref | Expression |
|---|---|
| elab2g.1 | ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) |
| elab2g.2 | ⊢ 𝐵 = {𝑥 ∣ 𝜑} |
| Ref | Expression |
|---|---|
| elab2g | ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ 𝐵 ↔ 𝜓)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elab2g.2 | . . 3 ⊢ 𝐵 = {𝑥 ∣ 𝜑} | |
| 2 | 1 | eleq2i 2832 | . 2 ⊢ (𝐴 ∈ 𝐵 ↔ 𝐴 ∈ {𝑥 ∣ 𝜑}) |
| 3 | elab2g.1 | . . 3 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | 3 | elabg 3621 | . 2 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ {𝑥 ∣ 𝜑} ↔ 𝜓)) |
| 5 | 2, 4 | bitrid 284 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ 𝐵 ↔ 𝜓)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 207 = wceq 1547 ∈ wcel 2119 {cab 2718 |
| 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 |
| This theorem is referenced by: elab2 3627 elab4g 3628 elrab 3636 eldif 3900 elin 3906 elun 4090 elpwg 4539 elsng 4576 elprg 4585 eluni 4848 elintg 4892 eliun 4932 eliin 4933 elopabw 5475 elxpi 5647 elrn2g 5839 eldmg 5847 dmopabelb 5865 elrnmpt 5907 elrnmpt1 5909 elimag 6023 elong 6325 elrnmpog 7498 elrnmpores 7501 eloprabi 8012 orderseqlem 8104 frrlem13 8245 tfrlem12 8325 elqsg 8707 fsetfocdm 8805 elixp2 8846 isacn 9964 isfin1a 10212 isfin2 10214 isfin4 10217 isfin7 10221 isfin3ds 10249 elwina 10607 elina 10608 iswun 10625 eltskg 10671 elgrug 10713 elnp 10908 elnpi 10909 iscat 17636 isps 18532 isdir 18562 ismgm 18607 elefmndbas2 18840 elsymgbas2 19346 mdetunilem9 22610 istopg 22885 isbasisg 22937 isptfin 23506 isufl 23903 isusp 24251 2sqlem9 27415 elno 27634 elnoOLD 27635 elz12s 28489 isuhgr 29154 isushgr 29155 isupgr 29178 isumgr 29189 isuspgr 29246 isusgr 29247 cplgruvtxb 29507 isconngr 30284 isconngr1 30285 isplig 30572 isgrpo 30593 elunop 31968 adjeu 31985 isarchi 33270 ispcmp 34048 eulerpartlemelr 34548 eulerpartlemgs2 34571 ballotlemfmpn 34686 isacycgr 35374 isacycgr1 35375 ismfs 35778 dfon2lem3 36012 elaltxp 36204 elttcirr 36760 bj-ismoore 37464 heiborlem1 38179 heiborlem10 38188 isass 38214 isexid 38215 ismgmOLD 38218 elghomlem2OLD 38254 elcoeleqvrels 39047 eleldisjs 39196 gneispace2 44577 ismnu 44706 nzss 44762 elrnmptf 45629 issal 46758 ismea 46895 isome 46938 ismgmALT 48715 eloprab1st2nd 49359 setrec1lem1 50178 |
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