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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 2853 | . 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 |
| Syntax hints: → wi 4 ↔ wb 209 = wceq 1568 ∈ wcel 2141 {cab 2739 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2143 ax-9 2151 ax-ext 2733 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-tru 1571 df-ex 1808 df-sb 2095 df-clab 2740 df-cleq 2753 df-clel 2836 |
| This theorem is referenced 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 5510 elxpi 5683 elrn2g 5880 eldmg 5888 dmopabelb 5906 elrnmpt 5948 elrnmpt1 5950 elimag 6066 elong 6368 elrnmpog 7545 elrnmpores 7548 eloprabi 8059 orderseqlem 8152 frrlem13 8294 tfrlem12 8375 elqsg 8760 fsetfocdm 8857 elixp2 8898 isacn 10027 isfin1a 10275 isfin2 10277 isfin4 10280 isfin7 10284 isfin3ds 10312 elwina 10670 elina 10671 iswun 10688 eltskg 10734 elgrug 10776 elnp 10971 elnpi 10972 iscat 17727 isps 18623 isdir 18653 ismgm 18698 elefmndbas2 18932 elsymgbas2 19442 mdetunilem9 22756 istopg 23031 isbasisg 23083 isptfin 23652 isufl 24049 isusp 24397 2sqlem9 27567 elno 27786 elz12s 28641 isuhgr 29376 isushgr 29377 isupgr 29400 isumgr 29411 isuspgr 29468 isusgr 29469 cplgruvtxb 29729 isconngr 30506 isconngr1 30507 isplig 30794 isgrpo 30815 elunop 32190 adjeu 32207 isarchi 33468 ispcmp 34213 eulerpartlemelr 34713 eulerpartlemgs2 34736 ballotlemfmpn 34851 elkarden 35534 isacycgr 35603 isacycgr1 35604 ismfs 36007 dfon2lem3 36241 elaltxp 36433 elttcirr 37008 bj-ismoore 37713 heiborlem1 38428 heiborlem10 38437 isass 38463 isexid 38464 ismgmOLD 38467 elghomlem2OLD 38503 elcoeleqvrels 39296 eleldisjs 39445 gneispace2 44828 ismnu 44941 nzss 44997 elrnmptf 45869 issal 46998 ismea 47135 isome 47178 ismgmALT 48955 eloprab1st2nd 49613 setrec1lem1 50432 |
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