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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 2856 | . 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 2147 {cab 2741 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 |
| This theorem is used by: elab2 3639 elab4g 3640 elrab 3648 eldif 4052 elin 4096 elun 4155 elpwg 4563 elsng 4598 elprg 4607 eluni 4873 elintg 4918 eliun 4958 eliin 4959 elopabw 5504 elxpi 5677 elrn2g 5879 eldmg 5887 dmopabelb 5905 elrnmpt 5947 elrnmpt1 5949 elimag 6072 elong 6388 elrnmpog 7579 elrnmpores 7582 eloprabi 8099 orderseqlem 8201 frrlem13 8344 tfrlem12 8425 elqsg 8812 fsetfocdm 8911 elixp2 8957 setrec1lem1 9993 isacn 10150 isfin1a 10397 isfin2 10399 isfin4 10402 isfin7 10406 isfin3ds 10434 elwina 10798 elina 10799 iswun 10816 eltskg 10862 elgrug 10904 elnp 11099 elnpi 11100 iscat 17875 isps 18771 isdir 18801 ismgm 18846 elefmndbas2 19099 elsymgbas2 19617 mdetunilem9 22965 istopg 23243 isbasisg 23295 isptfin 23865 isufl 24262 isusp 24610 2sqlem9 27784 elno 28033 elz12s 28888 isuhgr 29668 isushgr 29669 isupgr 29692 isumgr 29703 isuspgr 29763 isusgr 29764 cplgruvtxb 30024 isacycgr 30781 isacycgr1 30782 isconngr 30820 isconngr1 30821 isplig 31108 isgrpo 31129 elunop 32504 adjeu 32521 isarchi 33813 ispcmp 34559 eulerpartlemelr 35059 eulerpartlemgs2 35082 ballotlemfmpn 35197 elkarden 35923 ismfs 36481 dfon2lem3 36725 elaltxp 36918 elttcirr 37497 bj-ismoore 38217 heiborlem1 38937 heiborlem10 38946 isass 38972 isexid 38973 ismgmOLD 38976 elghomlem2OLD 39012 elcoeleqvrels 39803 eleldisjs 39952 gneispace2 45324 ismnu 45437 nzss 45493 elrnmptf 46401 issal 47529 ismea 47666 isome 47709 ismgmALT 49525 eloprab1st2nd 50184 |
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