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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 2307 nf5di 2319 19.9h 2320 19.21h 2321 19.23h 2322 exlimih 2323 exlimdh 2324 equsalhw 2325 equsexhv 2326 hban 2334 hb3an 2335 nfal 2354 hbex 2356 nfsbv 2361 cbv3hv 2370 dvelimhw 2375 cbv3h 2434 equsalh 2450 equsexh 2451 nfae 2463 axc16i 2466 dvelimh 2480 nfs1 2518 hbsb 2554 sb7h 2556 nfsab 2751 nfsabg 2752 cleqh 2890 nfcii 2912 nfralw 3310 bnj596 35377 bnj1146 35421 bnj1379 35460 bnj1464 35474 bnj1468 35476 bnj605 35537 bnj607 35546 bnj916 35563 bnj964 35573 bnj981 35580 bnj983 35581 bnj1014 35591 bnj1123 35616 bnj1373 35660 bnj1417 35671 bnj1445 35674 bnj1463 35685 bnj1497 35690 bj-cbv3hv2 37707 bj-equsalhv 37718 bj-nfs1v 37725 bj-nfsab1 37728 bj-gabima 37853 wl-nfalv 38457 nfequid-o 39967 nfa1-o 39972 nfalh 43266 2sb5ndVD 45891 2sb5ndALT 45913 |
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