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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 2227 | 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 2213 |
| This proof depends on definitions: df-bi 210 df-ex 1813 df-nf 1817 |
| This theorem is used by: 19.3 2238 alimd 2248 alrimi 2249 eximd 2252 nexd 2257 albid 2258 exbid 2259 hbs1 2307 hba1 2326 hban 2333 hb3an 2334 nfal 2353 hbex 2355 nfsbv 2360 cbv3v 2364 cbv3 2426 equs45f 2488 nfs1 2517 sb6f 2526 hbsb 2553 hbab1 2747 nfsab 2750 nfsabg 2751 nfcrii 2917 ralrimi 3260 hbra1 3299 nfralw 3309 bnj1316 35330 bnj1379 35340 bnj1468 35356 bnj958 35450 bnj981 35460 bnj1014 35471 bnj1128 35500 bnj1204 35522 bnj1279 35528 bnj1398 35544 bnj1408 35546 bnj1444 35553 bnj1445 35554 bnj1446 35555 bnj1447 35556 bnj1448 35557 bnj1449 35558 bnj1463 35565 bnj1312 35568 bnj1518 35574 bnj1519 35575 bnj1520 35576 bnj1525 35579 bj-cbv2v 37542 bj-equs45fv 37555 mpobi123f 38911 |
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