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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 2374 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | nfv 1576 | . 2 ⊢ Ⅎ𝑥𝜓 | |
| 3 | spcgv.1 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | 1, 2, 3 | spcegf 2889 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝜓 → ∃𝑥𝜑)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1397 ∃wex 1540 ∈ 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-v 2804 |
| This theorem is referenced by: spcedv 2895 spcev 2901 elabd 2951 eqeu 2976 absneu 3743 elunii 3898 axpweq 4261 euotd 4347 brcogw 4899 opeldmg 4936 breldmg 4937 dmsnopg 5208 dff3im 5792 elunirn 5907 unielxp 6337 op1steq 6342 tfr0dm 6488 tfrlemibxssdm 6493 tfrlemiex 6497 tfr1onlembxssdm 6509 tfr1onlemex 6513 tfrcllembxssdm 6522 tfrcllemex 6526 frecabcl 6565 ertr 6717 f1oen4g 6925 f1dom4g 6926 f1oen3g 6927 f1dom2g 6929 f1domg 6931 dom3d 6947 en1 6973 en2 6998 phpelm 7053 isinfinf 7086 ordiso 7235 djudom 7292 difinfsn 7299 ctm 7308 enumct 7314 djudoml 7434 djudomr 7435 cc2lem 7485 recexnq 7610 ltexprlemrl 7830 ltexprlemru 7832 recexprlemm 7844 recexprlemloc 7851 recexprlem1ssl 7853 recexprlem1ssu 7854 axpre-suploclemres 8121 frecuzrdgtcl 10675 frecuzrdgfunlem 10682 fihasheqf1oi 11050 zfz1isolem1 11105 climeu 11874 fsum3 11966 uzwodc 12626 gsumfzval 13492 mplsubgfilemm 14731 eltg3 14800 uptx 15017 xblm 15160 2lgslem1 15839 upgrex 15973 vtxdumgrfival 16168 1loopgrvd2fi 16175 bj-2inf 16584 subctctexmid 16652 |
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