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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 3620 | . 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 3626 elab4g 3627 elrab 3635 eldif 3900 elin 3906 elun 4094 elpwg 4545 elsng 4582 elprg 4591 eluni 4854 elintg 4898 eliun 4938 eliin 4939 elopabw 5481 elxpi 5653 elrn2g 5846 eldmg 5854 dmopabelb 5872 elrnmpt 5914 elrnmpt1 5916 elimag 6030 elong 6332 elrnmpog 7502 elrnmpores 7505 eloprabi 8016 orderseqlem 8107 frrlem13 8248 tfrlem12 8328 elqsg 8710 fsetfocdm 8808 elixp2 8849 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 17638 isps 18534 isdir 18564 ismgm 18609 elefmndbas2 18842 elsymgbas2 19348 mdetunilem9 22585 istopg 22860 isbasisg 22912 isptfin 23481 isufl 23878 isusp 24226 2sqlem9 27390 elno 27609 elnoOLD 27610 elz12s 28464 isuhgr 29129 isushgr 29130 isupgr 29153 isumgr 29164 isuspgr 29221 isusgr 29222 cplgruvtxb 29482 isconngr 30259 isconngr1 30260 isplig 30547 isgrpo 30568 elunop 31943 adjeu 31960 isarchi 33243 ispcmp 34001 eulerpartlemelr 34501 eulerpartlemgs2 34524 ballotlemfmpn 34639 isacycgr 35327 isacycgr1 35328 ismfs 35731 dfon2lem3 35965 elaltxp 36157 elttcirr 36713 bj-ismoore 37417 heiborlem1 38132 heiborlem10 38141 isass 38167 isexid 38168 ismgmOLD 38171 elghomlem2OLD 38207 elcoeleqvrels 39000 eleldisjs 39149 gneispace2 44559 ismnu 44688 nzss 44744 elrnmptf 45611 issal 46742 ismea 46879 isome 46922 ismgmALT 48693 eloprab1st2nd 49337 setrec1lem1 50156 |
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