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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 2857 | . 2 ⊢ (𝐴 ∈ 𝐵 ↔ 𝐴 ∈ {𝑥 ∣ 𝜑}) |
| 3 | elab2g.1 | . . 3 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | 3 | elabg 3638 | . 2 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ {𝑥 ∣ 𝜑} ↔ 𝜓)) |
| 5 | 2, 4 | bitrid 286 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ 𝐵 ↔ 𝜓)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 = wceq 1563 ∈ wcel 2145 {cab 2743 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-ext 2737 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-tru 1566 df-ex 1803 df-sb 2094 df-clab 2744 df-cleq 2757 df-clel 2840 |
| This theorem is referenced by: elab2 3644 elab4g 3645 elrab 3653 eldif 3917 elin 3923 elun 4109 elpwg 4561 elsng 4599 elprg 4608 eluni 4871 elintg 4916 eliun 4956 eliin 4957 elopabw 5501 elxpi 5674 elrn2g 5871 eldmg 5879 dmopabelb 5897 elrnmpt 5939 elrnmpt1 5941 elimag 6057 elong 6358 elrnmpog 7535 elrnmpores 7538 eloprabi 8048 orderseqlem 8141 frrlem13 8283 tfrlem12 8364 elqsg 8749 fsetfocdm 8846 elixp2 8887 isacn 10016 isfin1a 10264 isfin2 10266 isfin4 10269 isfin7 10273 isfin3ds 10301 elwina 10659 elina 10660 iswun 10677 eltskg 10723 elgrug 10765 elnp 10960 elnpi 10961 iscat 17718 isps 18614 isdir 18644 ismgm 18689 elefmndbas2 18923 elsymgbas2 19434 mdetunilem9 22738 istopg 23013 isbasisg 23065 isptfin 23634 isufl 24031 isusp 24379 2sqlem9 27549 elno 27768 elz12s 28623 isuhgr 29319 isushgr 29320 isupgr 29343 isumgr 29354 isuspgr 29411 isusgr 29412 cplgruvtxb 29672 isconngr 30449 isconngr1 30450 isplig 30737 isgrpo 30758 elunop 32133 adjeu 32150 isarchi 33415 ispcmp 34164 eulerpartlemelr 34664 eulerpartlemgs2 34687 ballotlemfmpn 34802 isacycgr 35508 isacycgr1 35509 ismfs 35912 dfon2lem3 36146 elaltxp 36338 elttcirr 36904 bj-ismoore 37607 heiborlem1 38322 heiborlem10 38331 isass 38357 isexid 38358 ismgmOLD 38361 elghomlem2OLD 38397 elcoeleqvrels 39190 eleldisjs 39339 gneispace2 44720 ismnu 44835 nzss 44891 elrnmptf 45757 issal 46886 ismea 47023 isome 47066 ismgmALT 48843 eloprab1st2nd 49497 setrec1lem1 50316 |
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