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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 2375 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | nfv 1577 | . 2 ⊢ Ⅎ𝑥𝜓 | |
| 3 | spcgv.1 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | 1, 2, 3 | spcegf 2890 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝜓 → ∃𝑥𝜑)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1398 ∃wex 1541 ∈ wcel 2202 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-v 2805 |
| This theorem is referenced by: spcedv 2896 spcev 2902 elabd 2952 eqeu 2977 absneu 3747 elunii 3903 axpweq 4267 euotd 4353 brcogw 4905 opeldmg 4942 breldmg 4943 dmsnopg 5215 dff3im 5800 elunirn 5917 unielxp 6346 op1steq 6351 tfr0dm 6531 tfrlemibxssdm 6536 tfrlemiex 6540 tfr1onlembxssdm 6552 tfr1onlemex 6556 tfrcllembxssdm 6565 tfrcllemex 6569 frecabcl 6608 ertr 6760 f1oen4g 6968 f1dom4g 6969 f1oen3g 6970 f1dom2g 6972 f1domg 6974 dom3d 6990 en1 7016 en2 7041 phpelm 7096 isinfinf 7129 ordiso 7295 djudom 7352 difinfsn 7359 ctm 7368 enumct 7374 djudoml 7494 djudomr 7495 cc2lem 7545 recexnq 7670 ltexprlemrl 7890 ltexprlemru 7892 recexprlemm 7904 recexprlemloc 7911 recexprlem1ssl 7913 recexprlem1ssu 7914 axpre-suploclemres 8181 frecuzrdgtcl 10737 frecuzrdgfunlem 10744 fihasheqf1oi 11112 zfz1isolem1 11167 climeu 11936 fsum3 12028 uzwodc 12688 gsumfzval 13554 mplsubgfilemm 14799 eltg3 14868 uptx 15085 xblm 15228 2lgslem1 15910 upgrex 16044 vtxdumgrfival 16239 1loopgrvd2fi 16246 bj-2inf 16654 subctctexmid 16722 |
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