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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 2854 | . 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 286 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ 𝐵 ↔ 𝜓)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 = wceq 1570 ∈ wcel 2145 {cab 2740 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2734 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2741 df-cleq 2754 df-clel 2837 |
| This theorem is used by: elab2 3639 elab4g 3640 elrab 3648 eldif 3912 elin 3918 elun 4103 elpwg 4563 elsng 4601 elprg 4610 eluni 4873 elintg 4918 eliun 4958 eliin 4959 elopabw 5508 elxpi 5681 elrn2g 5878 eldmg 5886 dmopabelb 5904 elrnmpt 5946 elrnmpt1 5948 elimag 6064 elong 6369 elrnmpog 7551 elrnmpores 7554 eloprabi 8063 orderseqlem 8158 frrlem13 8300 tfrlem12 8381 elqsg 8766 fsetfocdm 8865 elixp2 8911 isacn 10050 isfin1a 10297 isfin2 10299 isfin4 10302 isfin7 10306 isfin3ds 10334 elwina 10698 elina 10699 iswun 10716 eltskg 10762 elgrug 10804 elnp 10999 elnpi 11000 iscat 17764 isps 18660 isdir 18690 ismgm 18735 elefmndbas2 18987 elsymgbas2 19504 mdetunilem9 22846 istopg 23124 isbasisg 23176 isptfin 23746 isufl 24143 isusp 24491 2sqlem9 27664 elno 27883 elz12s 28738 isuhgr 29518 isushgr 29519 isupgr 29542 isumgr 29553 isuspgr 29613 isusgr 29614 cplgruvtxb 29874 isacycgr 30631 isacycgr1 30632 isconngr 30670 isconngr1 30671 isplig 30958 isgrpo 30979 elunop 32354 adjeu 32371 isarchi 33624 ispcmp 34369 eulerpartlemelr 34870 eulerpartlemgs2 34893 ballotlemfmpn 35008 elkarden 35683 ismfs 36130 dfon2lem3 36364 elaltxp 36557 elttcirr 37152 bj-ismoore 37857 heiborlem1 38563 heiborlem10 38572 isass 38598 isexid 38599 ismgmOLD 38602 elghomlem2OLD 38638 elcoeleqvrels 39429 eleldisjs 39578 gneispace2 44974 ismnu 45087 nzss 45143 elrnmptf 46015 issal 47144 ismea 47281 isome 47324 ismgmALT 49140 eloprab1st2nd 49798 setrec1lem1 50615 |
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