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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 3620 | . 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 3626 elab4g 3627 elrab 3635 eldif 3900 elin 3906 elun 4094 elpwg 4545 elsng 4582 elprg 4591 eluni 4854 elint 4896 elintg 4898 eliun 4938 eliin 4939 elopabw 5472 elxpi 5644 elrn2g 5837 eldmg 5845 dmopabelb 5863 elrnmpt 5905 elrnmpt1 5907 elimag 6021 elong 6323 elrnmpog 7493 elrnmpores 7496 eloprabi 8007 orderseqlem 8098 frrlem13 8239 tfrlem12 8319 elqsg 8701 fsetfocdm 8799 elixp2 8840 isacn 9955 isfin1a 10203 isfin2 10205 isfin4 10208 isfin7 10212 isfin3ds 10240 elwina 10598 elina 10599 iswun 10616 eltskg 10662 elgrug 10704 elnp 10899 elnpi 10900 iscat 17596 isps 18492 isdir 18522 ismgm 18567 elefmndbas2 18800 elsymgbas2 19306 mdetunilem9 22563 istopg 22838 isbasisg 22890 isptfin 23459 isufl 23856 isusp 24204 2sqlem9 27378 elno 27597 elnoOLD 27598 elz12s 28452 isuhgr 29117 isushgr 29118 isupgr 29141 isumgr 29152 isuspgr 29209 isusgr 29210 cplgruvtxb 29470 isconngr 30248 isconngr1 30249 isplig 30536 isgrpo 30557 elunop 31932 adjeu 31949 isarchi 33248 ispcmp 34007 eulerpartlemelr 34507 eulerpartlemgs2 34530 ballotlemfmpn 34645 isacycgr 35333 isacycgr1 35334 ismfs 35737 dfon2lem3 35971 elaltxp 36163 elttcirr 36719 bj-ismoore 37415 heiborlem1 38123 heiborlem10 38132 isass 38158 isexid 38159 ismgmOLD 38162 elghomlem2OLD 38198 elcoeleqvrels 38991 eleldisjs 39140 gneispace2 44562 ismnu 44691 nzss 44747 elrnmptf 45614 issal 46746 ismea 46883 isome 46926 ismgmALT 48657 eloprab1st2nd 49301 setrec1lem1 50120 |
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