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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 2392 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | nfv 1581 | . 2 ⊢ Ⅎ𝑥𝜓 | |
| 3 | spcgv.1 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | 1, 2, 3 | spcegf 2908 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝜓 → ∃𝑥𝜑)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1402 ∃wex 1545 ∈ wcel 2209 |
| 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 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 |
| This theorem is referenced by: spcedv 2914 spcev 2920 elabd 2971 eqeu 2996 absneu 3779 elunii 3935 axpweq 4303 euotd 4390 brcogw 4944 opeldmg 4981 breldmg 4982 dmsnopg 5254 dff3im 5844 elunirn 5962 unielxp 6398 op1steq 6403 tfr0dm 6583 tfrlemibxssdm 6588 tfrlemiex 6592 tfr1onlembxssdm 6604 tfr1onlemex 6608 tfrcllembxssdm 6617 tfrcllemex 6621 frecabcl 6660 ertr 6812 f1oen4g 7028 f1dom4g 7029 f1oen3g 7030 f1dom2g 7032 f1domg 7034 dom3d 7050 en1 7076 en2 7102 phpelm 7158 isinfinf 7191 ordiso 7366 djudom 7423 difinfsn 7430 ctm 7439 enumct 7445 djudoml 7565 djudomr 7566 cc2lem 7622 recexnq 7747 ltexprlemrl 7967 ltexprlemru 7969 recexprlemm 7981 recexprlemloc 7988 recexprlem1ssl 7990 recexprlem1ssu 7991 axpre-suploclemres 8258 frecuzrdgtcl 10827 frecuzrdgfunlem 10834 fihasheqf1oi 11204 zfz1isolem1 11270 climeu 12040 fsum3 12132 uzwodc 12792 gzsumfzval 13688 mplsubgfilemm 15012 eltg3 15081 uptx 15298 xblm 15441 2lgslem1 16124 upgrex 16258 vtxdumgrfival 16453 1loopgrvd2fi 16460 bj-2inf 16878 subctctexmid 16944 |
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