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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 3632 | . 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 3638 elab4g 3639 elrab 3647 eldif 3912 elin 3918 elun 4106 elpwg 4558 elsng 4595 elprg 4604 eluni 4867 elint 4909 elintg 4911 eliun 4951 eliin 4952 elopabw 5475 elxpi 5647 elrn2g 5840 eldmg 5848 dmopabelb 5866 elrnmpt 5908 elrnmpt1 5910 elimag 6024 elong 6326 elrnmpog 7495 elrnmpores 7498 eloprabi 8009 orderseqlem 8101 frrlem13 8242 tfrlem12 8322 elqsg 8704 fsetfocdm 8802 elixp2 8843 isacn 9958 isfin1a 10206 isfin2 10208 isfin4 10211 isfin7 10215 isfin3ds 10243 elwina 10601 elina 10602 iswun 10619 eltskg 10665 elgrug 10707 elnp 10902 elnpi 10903 iscat 17599 isps 18495 isdir 18525 ismgm 18570 elefmndbas2 18803 elsymgbas2 19306 mdetunilem9 22568 istopg 22843 isbasisg 22895 isptfin 23464 isufl 23861 isusp 24209 2sqlem9 27398 elno 27617 elnoOLD 27618 elzs12 28451 isuhgr 29116 isushgr 29117 isupgr 29140 isumgr 29151 isuspgr 29208 isusgr 29209 cplgruvtxb 29469 isconngr 30247 isconngr1 30248 isplig 30534 isgrpo 30555 elunop 31930 adjeu 31947 isarchi 33245 ispcmp 33995 eulerpartlemelr 34495 eulerpartlemgs2 34518 ballotlemfmpn 34633 isacycgr 35320 isacycgr1 35321 ismfs 35724 dfon2lem3 35958 elaltxp 36150 bj-ismoore 37281 heiborlem1 37983 heiborlem10 37992 isass 38018 isexid 38019 ismgmOLD 38022 elghomlem2OLD 38058 elcoeleqvrels 38851 eleldisjs 39000 gneispace2 44409 ismnu 44538 nzss 44594 elrnmptf 45461 issal 46594 ismea 46731 isome 46774 ismgmALT 48505 eloprab1st2nd 49149 setrec1lem1 49968 |
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