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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 5906 unielxp 6336 op1steq 6341 tfr0dm 6487 tfrlemibxssdm 6492 tfrlemiex 6496 tfr1onlembxssdm 6508 tfr1onlemex 6512 tfrcllembxssdm 6521 tfrcllemex 6525 frecabcl 6564 ertr 6716 f1oen4g 6924 f1dom4g 6925 f1oen3g 6926 f1dom2g 6928 f1domg 6930 dom3d 6946 en1 6972 en2 6997 phpelm 7052 isinfinf 7085 ordiso 7234 djudom 7291 difinfsn 7298 ctm 7307 enumct 7313 djudoml 7433 djudomr 7434 cc2lem 7484 recexnq 7609 ltexprlemrl 7829 ltexprlemru 7831 recexprlemm 7843 recexprlemloc 7850 recexprlem1ssl 7852 recexprlem1ssu 7853 axpre-suploclemres 8120 frecuzrdgtcl 10673 frecuzrdgfunlem 10680 fihasheqf1oi 11048 zfz1isolem1 11103 climeu 11856 fsum3 11947 uzwodc 12607 gsumfzval 13473 mplsubgfilemm 14711 eltg3 14780 uptx 14997 xblm 15140 2lgslem1 15819 upgrex 15953 vtxdumgrfival 16148 1loopgrvd2fi 16155 bj-2inf 16533 subctctexmid 16601 |
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