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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 2852 | . 2 ⊢ (𝐴 ∈ 𝐵 ↔ 𝐴 ∈ {𝑥 ∣ 𝜑}) |
| 3 | elab2g.1 | . . 3 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | 3 | elabg 3629 | . 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 1569 ∈ wcel 2144 {cab 2738 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1572 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 |
| This theorem is used by: elab2 3635 elab4g 3636 elrab 3644 eldif 4049 elin 4093 elun 4152 elpwg 4559 elsng 4597 elprg 4606 eluni 4869 elintg 4914 eliun 4954 eliin 4955 elopabw 5499 elxpi 5672 elrn2g 5871 eldmg 5879 dmopabelb 5897 elrnmpt 5939 elrnmpt1 5941 elimag 6059 elong 6370 elrnmpog 7555 elrnmpores 7558 eloprabi 8074 orderseqlem 8174 frrlem13 8317 tfrlem12 8398 elqsg 8785 fsetfocdm 8884 elixp2 8930 setrec1lem1 9967 isacn 10124 isfin1a 10371 isfin2 10373 isfin4 10376 isfin7 10380 isfin3ds 10408 elwina 10772 elina 10773 iswun 10790 eltskg 10836 elgrug 10878 elnp 11073 elnpi 11074 iscat 17847 isps 18743 isdir 18773 ismgm 18818 elefmndbas2 19071 elsymgbas2 19588 mdetunilem9 22936 istopg 23214 isbasisg 23266 isptfin 23836 isufl 24233 isusp 24581 2sqlem9 27755 elno 28004 elz12s 28859 isuhgr 29639 isushgr 29640 isupgr 29663 isumgr 29674 isuspgr 29734 isusgr 29735 cplgruvtxb 29995 isacycgr 30752 isacycgr1 30753 isconngr 30791 isconngr1 30792 isplig 31079 isgrpo 31100 elunop 32475 adjeu 32492 isarchi 33786 ispcmp 34532 eulerpartlemelr 35032 eulerpartlemgs2 35055 ballotlemfmpn 35170 elkarden 35872 ismfs 36383 dfon2lem3 36622 elaltxp 36815 elttcirr 37394 bj-ismoore 38101 heiborlem1 38821 heiborlem10 38830 isass 38856 isexid 38857 ismgmOLD 38860 elghomlem2OLD 38896 elcoeleqvrels 39687 eleldisjs 39836 gneispace2 45208 ismnu 45321 nzss 45377 elrnmptf 46272 issal 47400 ismea 47537 isome 47580 ismgmALT 49396 eloprab1st2nd 50054 |
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