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| Mirrors > Home > ILE Home > Th. List > spcegv | GIF version | ||
| Description: Existential specialization, using implicit substitution. (Contributed by NM, 14-Aug-1994.) |
| Ref | Expression |
|---|---|
| spcgv.1 | ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) |
| Ref | Expression |
|---|---|
| spcegv | ⊢ (𝐴 ∈ 𝑉 → (𝜓 → ∃𝑥𝜑)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nfcv 2372 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | nfv 1574 | . 2 ⊢ Ⅎ𝑥𝜓 | |
| 3 | spcgv.1 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | 1, 2, 3 | spcegf 2886 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝜓 → ∃𝑥𝜑)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1395 ∃wex 1538 ∈ wcel 2200 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-v 2801 |
| This theorem is referenced by: spcedv 2892 spcev 2898 elabd 2948 eqeu 2973 absneu 3738 elunii 3893 axpweq 4255 euotd 4341 brcogw 4891 opeldmg 4928 breldmg 4929 dmsnopg 5200 dff3im 5782 elunirn 5896 unielxp 6326 op1steq 6331 tfr0dm 6474 tfrlemibxssdm 6479 tfrlemiex 6483 tfr1onlembxssdm 6495 tfr1onlemex 6499 tfrcllembxssdm 6508 tfrcllemex 6512 frecabcl 6551 ertr 6703 f1oen4g 6911 f1dom4g 6912 f1oen3g 6913 f1dom2g 6915 f1domg 6917 dom3d 6933 en1 6959 en2 6981 phpelm 7036 isinfinf 7067 ordiso 7214 djudom 7271 difinfsn 7278 ctm 7287 enumct 7293 djudoml 7412 djudomr 7413 cc2lem 7463 recexnq 7588 ltexprlemrl 7808 ltexprlemru 7810 recexprlemm 7822 recexprlemloc 7829 recexprlem1ssl 7831 recexprlem1ssu 7832 axpre-suploclemres 8099 frecuzrdgtcl 10646 frecuzrdgfunlem 10653 fihasheqf1oi 11021 zfz1isolem1 11075 climeu 11823 fsum3 11914 uzwodc 12574 gsumfzval 13440 mplsubgfilemm 14678 eltg3 14747 uptx 14964 xblm 15107 2lgslem1 15786 upgrex 15919 vtxdumgrfival 16058 bj-2inf 16384 subctctexmid 16453 |
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