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| Mirrors > Home > MPE Home > Th. List > nf5i | Structured version Visualization version GIF version | ||
| Description: Deduce that 𝑥 is not free in 𝜑 from the definition. (Contributed by Mario Carneiro, 11-Aug-2016.) |
| Ref | Expression |
|---|---|
| nf5i.1 | ⊢ (𝜑 → ∀𝑥𝜑) |
| Ref | Expression |
|---|---|
| nf5i | ⊢ Ⅎ𝑥𝜑 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nf5-1 2182 | . 2 ⊢ (∀𝑥(𝜑 → ∀𝑥𝜑) → Ⅎ𝑥𝜑) | |
| 2 | nf5i.1 | . 2 ⊢ (𝜑 → ∀𝑥𝜑) | |
| 3 | 1, 2 | mpg 1830 | 1 ⊢ Ⅎ𝑥𝜑 |
| 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-10 2178 |
| This proof depends on definitions: df-bi 210 df-ex 1813 df-nf 1817 |
| This theorem is used by: nfnaew 2186 nfe1 2187 sbh 2306 nf5di 2318 19.9h 2319 19.21h 2320 19.23h 2321 exlimih 2322 exlimdh 2323 equsalhw 2324 equsexhv 2325 hban 2333 hb3an 2334 nfal 2353 hbex 2355 nfsbv 2360 cbv3hv 2369 dvelimhw 2374 cbv3h 2433 equsalh 2449 equsexh 2450 nfae 2462 axc16i 2465 dvelimh 2479 nfs1 2517 hbsb 2553 sb7h 2555 nfsab 2750 nfsabg 2751 cleqh 2889 nfcii 2911 nfralw 3309 bnj596 35257 bnj1146 35301 bnj1379 35340 bnj1464 35354 bnj1468 35356 bnj605 35417 bnj607 35426 bnj916 35443 bnj964 35453 bnj981 35460 bnj983 35461 bnj1014 35471 bnj1123 35496 bnj1373 35540 bnj1417 35551 bnj1445 35554 bnj1463 35565 bnj1497 35570 bj-cbv3hv2 37539 bj-equsalhv 37550 bj-nfs1v 37557 bj-nfsab1 37560 bj-gabima 37685 wl-nfalv 38289 nfequid-o 39784 nfa1-o 39789 nfalh 43083 2sb5ndVD 45733 2sb5ndALT 45755 |
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