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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 2181 | . 2 ⊢ (∀𝑥(𝜑 → ∀𝑥𝜑) → Ⅎ𝑥𝜑) | |
| 2 | nf5i.1 | . 2 ⊢ (𝜑 → ∀𝑥𝜑) | |
| 3 | 1, 2 | mpg 1829 | 1 ⊢ Ⅎ𝑥𝜑 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∀wal 1567 Ⅎwnf 1815 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-10 2177 |
| This proof depends on definitions: df-bi 210 df-ex 1812 df-nf 1816 |
| This theorem is used by: nfnaew 2185 nfe1 2186 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 35427 bnj1146 35471 bnj1379 35510 bnj1464 35524 bnj1468 35526 bnj605 35587 bnj607 35596 bnj916 35613 bnj964 35623 bnj981 35630 bnj983 35631 bnj1014 35641 bnj1123 35666 bnj1373 35710 bnj1417 35721 bnj1445 35724 bnj1463 35735 bnj1497 35740 bj-cbv3hv2 37831 bj-equsalhv 37842 bj-nfs1v 37849 bj-nfsab1 37852 bj-gabima 37977 wl-nfalv 38594 nfequid-o 40104 nfa1-o 40109 nfalh 43403 2sb5ndVD 46028 2sb5ndALT 46050 |
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