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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 2829 | . 2 ⊢ (𝐴 ∈ 𝐵 ↔ 𝐴 ∈ {𝑥 ∣ 𝜑}) |
| 3 | elab2g.1 | . . 3 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | 3 | elabg 3633 | . 2 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ {𝑥 ∣ 𝜑} ↔ 𝜓)) |
| 5 | 2, 4 | bitrid 283 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ 𝐵 ↔ 𝜓)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1542 ∈ wcel 2114 {cab 2715 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 |
| This theorem is referenced by: elab2 3639 elab4g 3640 elrab 3648 eldif 3913 elin 3919 elun 4107 elpwg 4559 elsng 4596 elprg 4605 eluni 4868 elint 4910 elintg 4912 eliun 4952 eliin 4953 elopabw 5482 elxpi 5654 elrn2g 5847 eldmg 5855 dmopabelb 5873 elrnmpt 5915 elrnmpt1 5917 elimag 6031 elong 6333 elrnmpog 7503 elrnmpores 7506 eloprabi 8017 orderseqlem 8109 frrlem13 8250 tfrlem12 8330 elqsg 8712 fsetfocdm 8810 elixp2 8851 isacn 9966 isfin1a 10214 isfin2 10216 isfin4 10219 isfin7 10223 isfin3ds 10251 elwina 10609 elina 10610 iswun 10627 eltskg 10673 elgrug 10715 elnp 10910 elnpi 10911 iscat 17607 isps 18503 isdir 18533 ismgm 18578 elefmndbas2 18811 elsymgbas2 19314 mdetunilem9 22576 istopg 22851 isbasisg 22903 isptfin 23472 isufl 23869 isusp 24217 2sqlem9 27406 elno 27625 elnoOLD 27626 elz12s 28480 isuhgr 29145 isushgr 29146 isupgr 29169 isumgr 29180 isuspgr 29237 isusgr 29238 cplgruvtxb 29498 isconngr 30276 isconngr1 30277 isplig 30563 isgrpo 30584 elunop 31959 adjeu 31976 isarchi 33275 ispcmp 34034 eulerpartlemelr 34534 eulerpartlemgs2 34557 ballotlemfmpn 34672 isacycgr 35358 isacycgr1 35359 ismfs 35762 dfon2lem3 35996 elaltxp 36188 bj-ismoore 37349 heiborlem1 38051 heiborlem10 38060 isass 38086 isexid 38087 ismgmOLD 38090 elghomlem2OLD 38126 elcoeleqvrels 38919 eleldisjs 39068 gneispace2 44477 ismnu 44606 nzss 44662 elrnmptf 45529 issal 46661 ismea 46798 isome 46841 ismgmALT 48572 eloprab1st2nd 49216 setrec1lem1 50035 |
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