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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 2680 | . 2 ⊢ (𝐴 ∈ 𝐵 ↔ 𝐴 ∈ {𝑥 ∣ 𝜑}) |
3 | elab2g.1 | . . 3 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
4 | 3 | elabg 3320 | . 2 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ {𝑥 ∣ 𝜑} ↔ 𝜓)) |
5 | 2, 4 | syl5bb 271 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 ∈ 𝐵 ↔ 𝜓)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 = wceq 1475 ∈ wcel 1977 {cab 2596 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-v 3175 |
This theorem is referenced by: elab2 3323 elab4g 3324 eldif 3550 elun 3715 elin 3758 elsng 4139 elprg 4144 eluni 4375 elintg 4418 eliun 4460 eliin 4461 elopab 4908 elrn2g 5235 eldmg 5241 elrnmpt 5293 elrnmpt1 5295 elimag 5389 elong 5648 elrnmpt2g 6670 elrnmpt2res 6672 eloprabi 7121 tfrlem12 7372 elqsg 7685 elixp2 7798 isacn 8750 isfin1a 8997 isfin2 8999 isfin4 9002 isfin7 9006 isfin3ds 9034 elwina 9387 elina 9388 iswun 9405 eltskg 9451 elgrug 9493 elnp 9688 elnpi 9689 iscat 16156 isps 17025 isdir 17055 ismgm 17066 elsymgbas2 17624 mdetunilem9 20245 istopg 20525 isbasisg 20562 isptfin 21129 isufl 21527 isusp 21875 2sqlem9 24952 isuhgr 25726 isushgr 25727 isupgr 25751 isumgr 25761 isplig 26720 isgrpo 26735 elunop 28115 adjeu 28132 isarchi 29067 ispcmp 29252 eulerpartlemelr 29746 eulerpartlemgs2 29769 ballotlemfmpn 29883 ismfs 30700 dfon2lem3 30934 orderseqlem 30993 elno 31043 elaltxp 31252 heiborlem1 32780 heiborlem10 32789 isass 32815 isexid 32816 ismgmOLD 32819 elghomlem2OLD 32855 gneispace2 37450 nzss 37538 elrnmptf 38362 issal 39210 isuspgr 40382 isusgr 40383 iscplgr 40636 isconngr 41356 isconngr1 41357 isfrgr 41430 ismgmALT 41649 |
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