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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 3630 | . 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 3636 elab4g 3637 elrab 3645 eldif 3909 elin 3915 elun 4100 elpwg 4560 elsng 4598 elprg 4607 eluni 4870 elintg 4915 eliun 4955 eliin 4956 elopabw 5504 elxpi 5677 elrn2g 5874 eldmg 5882 dmopabelb 5900 elrnmpt 5942 elrnmpt1 5944 elimag 6060 elong 6365 elrnmpog 7549 elrnmpores 7552 eloprabi 8061 orderseqlem 8156 frrlem13 8298 tfrlem12 8379 elqsg 8766 fsetfocdm 8865 elixp2 8911 isacn 10050 isfin1a 10297 isfin2 10299 isfin4 10302 isfin7 10306 isfin3ds 10334 elwina 10698 elina 10699 iswun 10716 eltskg 10762 elgrug 10804 elnp 10999 elnpi 11000 iscat 17763 isps 18659 isdir 18689 ismgm 18734 elefmndbas2 18986 elsymgbas2 19503 mdetunilem9 22845 istopg 23123 isbasisg 23175 isptfin 23745 isufl 24142 isusp 24490 2sqlem9 27666 elno 27885 elz12s 28740 isuhgr 29520 isushgr 29521 isupgr 29544 isumgr 29555 isuspgr 29615 isusgr 29616 cplgruvtxb 29876 isacycgr 30633 isacycgr1 30634 isconngr 30672 isconngr1 30673 isplig 30960 isgrpo 30981 elunop 32356 adjeu 32373 isarchi 33625 ispcmp 34370 eulerpartlemelr 34871 eulerpartlemgs2 34894 ballotlemfmpn 35009 elkarden 35684 ismfs 36131 dfon2lem3 36365 elaltxp 36558 elttcirr 37153 bj-ismoore 37858 heiborlem1 38564 heiborlem10 38573 isass 38599 isexid 38600 ismgmOLD 38603 elghomlem2OLD 38639 elcoeleqvrels 39430 eleldisjs 39579 gneispace2 44975 ismnu 45088 nzss 45144 elrnmptf 46016 issal 47145 ismea 47282 isome 47325 ismgmALT 49141 eloprab1st2nd 49799 setrec1lem1 50616 |
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