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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 2854 | . 2 ⊢ (𝐴 ∈ 𝐵 ↔ 𝐴 ∈ {𝑥 ∣ 𝜑}) |
| 3 | elab2g.1 | . . 3 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | 3 | elabg 3634 | . 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 1569 ∈ wcel 2142 {cab 2740 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-ext 2734 |
| This proof depends on definitions: df-bi 210 df-an 401 df-tru 1572 df-ex 1809 df-sb 2096 df-clab 2741 df-cleq 2754 df-clel 2837 |
| This theorem is used by: elab2 3640 elab4g 3641 elrab 3649 eldif 3914 elin 3920 elun 4106 elpwg 4564 elsng 4602 elprg 4611 eluni 4874 elintg 4919 eliun 4959 eliin 4960 elopabw 5509 elxpi 5682 elrn2g 5879 eldmg 5887 dmopabelb 5905 elrnmpt 5947 elrnmpt1 5949 elimag 6065 elong 6368 elrnmpog 7547 elrnmpores 7550 eloprabi 8058 orderseqlem 8151 frrlem13 8293 tfrlem12 8374 elqsg 8759 fsetfocdm 8856 elixp2 8897 isacn 10035 isfin1a 10282 isfin2 10284 isfin4 10287 isfin7 10291 isfin3ds 10319 elwina 10677 elina 10678 iswun 10695 eltskg 10741 elgrug 10783 elnp 10978 elnpi 10979 iscat 17734 isps 18630 isdir 18660 ismgm 18705 elefmndbas2 18939 elsymgbas2 19449 mdetunilem9 22788 istopg 23063 isbasisg 23115 isptfin 23684 isufl 24081 isusp 24429 2sqlem9 27602 elno 27821 elz12s 28676 isuhgr 29421 isushgr 29422 isupgr 29445 isumgr 29456 isuspgr 29513 isusgr 29514 cplgruvtxb 29774 isconngr 30551 isconngr1 30552 isplig 30839 isgrpo 30860 elunop 32235 adjeu 32252 isarchi 33511 ispcmp 34256 eulerpartlemelr 34756 eulerpartlemgs2 34779 ballotlemfmpn 34894 elkarden 35576 isacycgr 35645 isacycgr1 35646 ismfs 36049 dfon2lem3 36283 elaltxp 36475 elttcirr 37070 bj-ismoore 37775 heiborlem1 38490 heiborlem10 38499 isass 38525 isexid 38526 ismgmOLD 38529 elghomlem2OLD 38565 elcoeleqvrels 39356 eleldisjs 39505 gneispace2 44886 ismnu 44999 nzss 45055 elrnmptf 45927 issal 47056 ismea 47193 isome 47236 ismgmALT 49016 eloprab1st2nd 49674 setrec1lem1 50493 |
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