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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 2228 | 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 2239 alimd 2249 alrimi 2250 eximd 2253 nexd 2258 albid 2259 exbid 2260 hbs1 2308 hba1 2327 hban 2334 hb3an 2335 nfal 2354 hbex 2356 nfsbv 2361 cbv3v 2365 cbv3 2427 equs45f 2489 nfs1 2518 sb6f 2527 hbsb 2554 hbab1 2748 nfsab 2751 nfsabg 2752 nfcrii 2918 ralrimi 3261 hbra1 3300 nfralw 3310 bnj1316 35450 bnj1379 35460 bnj1468 35476 bnj958 35570 bnj981 35580 bnj1014 35591 bnj1128 35620 bnj1204 35642 bnj1279 35648 bnj1398 35664 bnj1408 35666 bnj1444 35673 bnj1445 35674 bnj1446 35675 bnj1447 35676 bnj1448 35677 bnj1449 35678 bnj1463 35685 bnj1312 35688 bnj1518 35694 bnj1519 35695 bnj1520 35696 bnj1525 35699 bj-cbv2v 37710 bj-equs45fv 37723 mpobi123f 39094 |
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