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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 2848 | . 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 285 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ 𝐵 ↔ 𝜓)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 = wceq 1554 ∈ wcel 2136 {cab 2734 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1809 ax-4 1823 ax-5 1924 ax-6 1981 ax-7 2022 ax-8 2138 ax-9 2146 ax-ext 2728 |
| This theorem depends on definitions: df-bi 209 df-an 399 df-tru 1557 df-ex 1794 df-sb 2085 df-clab 2735 df-cleq 2748 df-clel 2831 |
| This theorem is referenced by: elab2 3636 elab4g 3637 elrab 3645 eldif 3909 elin 3915 elun 4101 elpwg 4552 elsng 4590 elprg 4599 eluni 4862 elintg 4907 eliun 4947 eliin 4948 elopabw 5490 elxpi 5662 elrn2g 5859 eldmg 5867 dmopabelb 5885 elrnmpt 5927 elrnmpt1 5929 elimag 6043 elong 6343 elrnmpog 7520 elrnmpores 7523 eloprabi 8033 orderseqlem 8125 frrlem13 8267 tfrlem12 8348 elqsg 8733 fsetfocdm 8831 elixp2 8872 isacn 9990 isfin1a 10239 isfin2 10241 isfin4 10244 isfin7 10248 isfin3ds 10276 elwina 10634 elina 10635 iswun 10652 eltskg 10698 elgrug 10740 elnp 10935 elnpi 10936 iscat 17680 isps 18576 isdir 18606 ismgm 18651 elefmndbas2 18884 elsymgbas2 19389 mdetunilem9 22653 istopg 22928 isbasisg 22980 isptfin 23549 isufl 23946 isusp 24294 2sqlem9 27461 elno 27680 elz12s 28535 isuhgr 29200 isushgr 29201 isupgr 29224 isumgr 29235 isuspgr 29292 isusgr 29293 cplgruvtxb 29553 isconngr 30330 isconngr1 30331 isplig 30618 isgrpo 30639 elunop 32014 adjeu 32031 isarchi 33316 ispcmp 34108 eulerpartlemelr 34608 eulerpartlemgs2 34631 ballotlemfmpn 34746 isacycgr 35443 isacycgr1 35444 ismfs 35847 dfon2lem3 36081 elaltxp 36273 elttcirr 36839 bj-ismoore 37543 heiborlem1 38258 heiborlem10 38267 isass 38293 isexid 38294 ismgmOLD 38297 elghomlem2OLD 38333 elcoeleqvrels 39126 eleldisjs 39275 gneispace2 44656 ismnu 44785 nzss 44841 elrnmptf 45707 issal 46836 ismea 46973 isome 47016 ismgmALT 48793 eloprab1st2nd 49437 setrec1lem1 50256 |
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