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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 2852 | . 2 ⊢ (𝐴 ∈ 𝐵 ↔ 𝐴 ∈ {𝑥 ∣ 𝜑}) |
| 3 | elab2g.1 | . . 3 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | 3 | elabg 3629 | . 2 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ {𝑥 ∣ 𝜑} ↔ 𝜓)) |
| 5 | 2, 4 | bitrid 286 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ 𝐵 ↔ 𝜓)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 = wceq 1570 ∈ wcel 2145 {cab 2738 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 |
| This theorem is used by: elab2 3635 elab4g 3636 elrab 3644 eldif 3908 elin 3914 elun 4099 elpwg 4559 elsng 4597 elprg 4606 eluni 4869 elintg 4914 eliun 4954 eliin 4955 elopabw 5496 elxpi 5669 elrn2g 5868 eldmg 5876 dmopabelb 5894 elrnmpt 5936 elrnmpt1 5938 elimag 6054 elong 6359 elrnmpog 7543 elrnmpores 7546 eloprabi 8057 orderseqlem 8152 frrlem13 8294 tfrlem12 8375 elqsg 8762 fsetfocdm 8861 elixp2 8907 setrec1lem1 9938 isacn 10095 isfin1a 10342 isfin2 10344 isfin4 10347 isfin7 10351 isfin3ds 10379 elwina 10743 elina 10744 iswun 10761 eltskg 10807 elgrug 10849 elnp 11044 elnpi 11045 iscat 17808 isps 18704 isdir 18734 ismgm 18779 elefmndbas2 19032 elsymgbas2 19549 mdetunilem9 22897 istopg 23175 isbasisg 23227 isptfin 23797 isufl 24194 isusp 24542 2sqlem9 27718 elno 27937 elz12s 28792 isuhgr 29572 isushgr 29573 isupgr 29596 isumgr 29607 isuspgr 29667 isusgr 29668 cplgruvtxb 29928 isacycgr 30685 isacycgr1 30686 isconngr 30724 isconngr1 30725 isplig 31012 isgrpo 31033 elunop 32408 adjeu 32425 isarchi 33677 ispcmp 34423 eulerpartlemelr 34924 eulerpartlemgs2 34947 ballotlemfmpn 35062 elkarden 35748 ismfs 36235 dfon2lem3 36469 elaltxp 36662 elttcirr 37241 bj-ismoore 37946 heiborlem1 38665 heiborlem10 38674 isass 38700 isexid 38701 ismgmOLD 38704 elghomlem2OLD 38740 elcoeleqvrels 39531 eleldisjs 39680 gneispace2 45076 ismnu 45189 nzss 45245 elrnmptf 46117 issal 47246 ismea 47383 isome 47426 ismgmALT 49242 eloprab1st2nd 49900 |
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