| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 17627 isps 18523 isdir 18553 ismgm 18598 elefmndbas2 18831 elsymgbas2 19337 mdetunilem9 22594 istopg 22869 isbasisg 22921 isptfin 23490 isufl 23887 isusp 24235 2sqlem9 27409 elno 27628 elnoOLD 27629 elz12s 28483 isuhgr 29148 isushgr 29149 isupgr 29172 isumgr 29183 isuspgr 29240 isusgr 29241 cplgruvtxb 29501 isconngr 30279 isconngr1 30280 isplig 30567 isgrpo 30588 elunop 31963 adjeu 31980 isarchi 33263 ispcmp 34022 eulerpartlemelr 34522 eulerpartlemgs2 34545 ballotlemfmpn 34660 isacycgr 35348 isacycgr1 35349 ismfs 35752 dfon2lem3 35986 elaltxp 36178 elttcirr 36734 bj-ismoore 37430 heiborlem1 38143 heiborlem10 38152 isass 38178 isexid 38179 ismgmOLD 38182 elghomlem2OLD 38218 elcoeleqvrels 39011 eleldisjs 39160 gneispace2 44574 ismnu 44703 nzss 44759 elrnmptf 45626 issal 46757 ismea 46894 isome 46937 ismgmALT 48696 eloprab1st2nd 49340 setrec1lem1 50159 |
| Copyright terms: Public domain | W3C validator |