| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 2887 | 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 2802 |
| This theorem is referenced by: spcedv 2893 spcev 2899 elabd 2949 eqeu 2974 absneu 3741 elunii 3896 axpweq 4259 euotd 4345 brcogw 4897 opeldmg 4934 breldmg 4935 dmsnopg 5206 dff3im 5788 elunirn 5902 unielxp 6332 op1steq 6337 tfr0dm 6483 tfrlemibxssdm 6488 tfrlemiex 6492 tfr1onlembxssdm 6504 tfr1onlemex 6508 tfrcllembxssdm 6517 tfrcllemex 6521 frecabcl 6560 ertr 6712 f1oen4g 6920 f1dom4g 6921 f1oen3g 6922 f1dom2g 6924 f1domg 6926 dom3d 6942 en1 6968 en2 6993 phpelm 7048 isinfinf 7079 ordiso 7226 djudom 7283 difinfsn 7290 ctm 7299 enumct 7305 djudoml 7424 djudomr 7425 cc2lem 7475 recexnq 7600 ltexprlemrl 7820 ltexprlemru 7822 recexprlemm 7834 recexprlemloc 7841 recexprlem1ssl 7843 recexprlem1ssu 7844 axpre-suploclemres 8111 frecuzrdgtcl 10664 frecuzrdgfunlem 10671 fihasheqf1oi 11039 zfz1isolem1 11094 climeu 11847 fsum3 11938 uzwodc 12598 gsumfzval 13464 mplsubgfilemm 14702 eltg3 14771 uptx 14988 xblm 15131 2lgslem1 15810 upgrex 15944 vtxdumgrfival 16104 1loopgrvd2fi 16111 bj-2inf 16469 subctctexmid 16537 |
| Copyright terms: Public domain | W3C validator |