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| Mirrors > Home > MPE Home > Th. List > nf5ri | Structured version Visualization version GIF version | ||
| Description: Consequence of the definition of not-free. (Contributed by Mario Carneiro, 11-Aug-2016.) (Proof shortened by Wolf Lammen, 15-Mar-2023.) |
| Ref | Expression |
|---|---|
| nf5ri.1 | ⊢ Ⅎ𝑥𝜑 |
| Ref | Expression |
|---|---|
| nf5ri | ⊢ (𝜑 → ∀𝑥𝜑) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nf5ri.1 | . . 3 ⊢ Ⅎ𝑥𝜑 | |
| 2 | 1 | nfri 1822 | . 2 ⊢ (∃𝑥𝜑 → ∀𝑥𝜑) |
| 3 | 2 | 19.23bi 2230 | 1 ⊢ (𝜑 → ∀𝑥𝜑) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∀wal 1568 Ⅎwnf 1816 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-12 2216 |
| This proof depends on definitions: df-bi 210 df-ex 1813 df-nf 1817 |
| This theorem is used by: 19.3 2241 alimd 2251 alrimi 2252 eximd 2255 nexd 2260 albid 2261 exbid 2262 hbs1 2311 hba1 2330 hban 2337 hb3an 2338 nfal 2358 hbex 2360 nfsbv 2365 cbv3v 2369 cbv3 2431 equs45f 2493 nfs1 2522 sb6f 2531 hbsb 2558 hbab1 2752 nfsab 2755 nfsabg 2756 nfcrii 2922 ralrimi 3265 hbra1 3304 nfralw 3314 bnj1316 35275 bnj1379 35285 bnj1468 35301 bnj958 35395 bnj981 35405 bnj1014 35416 bnj1128 35445 bnj1204 35467 bnj1279 35473 bnj1398 35489 bnj1408 35491 bnj1444 35498 bnj1445 35499 bnj1446 35500 bnj1447 35501 bnj1448 35502 bnj1449 35503 bnj1463 35510 bnj1312 35513 bnj1518 35519 bnj1519 35520 bnj1520 35521 bnj1525 35524 bj-cbv2v 37492 bj-equs45fv 37505 mpobi123f 38871 |
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