| 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 2384 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | nfv 1577 | . 2 ⊢ Ⅎ𝑥𝜓 | |
| 3 | spcgv.1 | . 2 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 4 | 1, 2, 3 | spcegf 2900 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝜓 → ∃𝑥𝜑)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1398 ∃wex 1541 ∈ wcel 2203 |
| 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 2214 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-v 2815 |
| This theorem is referenced by: spcedv 2906 spcev 2912 elabd 2962 eqeu 2987 absneu 3763 elunii 3919 axpweq 4284 euotd 4371 brcogw 4924 opeldmg 4961 breldmg 4962 dmsnopg 5234 dff3im 5822 elunirn 5939 unielxp 6368 op1steq 6373 tfr0dm 6553 tfrlemibxssdm 6558 tfrlemiex 6562 tfr1onlembxssdm 6574 tfr1onlemex 6578 tfrcllembxssdm 6587 tfrcllemex 6591 frecabcl 6630 ertr 6782 f1oen4g 6991 f1dom4g 6992 f1oen3g 6993 f1dom2g 6995 f1domg 6997 dom3d 7013 en1 7039 en2 7065 phpelm 7121 isinfinf 7154 ordiso 7327 djudom 7384 difinfsn 7391 ctm 7400 enumct 7406 djudoml 7526 djudomr 7527 cc2lem 7580 recexnq 7705 ltexprlemrl 7925 ltexprlemru 7927 recexprlemm 7939 recexprlemloc 7946 recexprlem1ssl 7948 recexprlem1ssu 7949 axpre-suploclemres 8216 frecuzrdgtcl 10774 frecuzrdgfunlem 10781 fihasheqf1oi 11150 zfz1isolem1 11212 climeu 11981 fsum3 12073 uzwodc 12733 gsumfzval 13604 mplsubgfilemm 14853 eltg3 14922 uptx 15139 xblm 15282 2lgslem1 15964 upgrex 16098 vtxdumgrfival 16293 1loopgrvd2fi 16300 bj-2inf 16708 subctctexmid 16774 |
| Copyright terms: Public domain | W3C validator |