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| Mirrors > Home > MPE Home > Th. List > nfnae | Structured version Visualization version GIF version | ||
| Description: All variables are effectively bound in a distinct variable specifier. Usage of this theorem is discouraged because it depends on ax-13 2401. Use the weaker nfnaew 2185 when possible. (Contributed by Mario Carneiro, 11-Aug-2016.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| nfnae | ⊢ Ⅎ𝑧 ¬ ∀𝑥 𝑥 = 𝑦 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nfae 2462 | . 2 ⊢ Ⅎ𝑧∀𝑥 𝑥 = 𝑦 | |
| 2 | 1 | nfn 1889 | 1 ⊢ Ⅎ𝑧 ¬ ∀𝑥 𝑥 = 𝑦 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 ∀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-5 1942 ax-6 1999 ax-7 2040 ax-10 2177 ax-11 2193 ax-12 2212 ax-13 2401 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-tru 1572 df-ex 1812 df-nf 1816 |
| This theorem is used by: nfald2 2474 dvelimf 2477 sbequ6 2495 2ax6elem 2499 nfsb4t 2528 sbco2 2540 sbco3 2542 sb9 2548 sbal1 2557 sbal2 2558 nfabd2 2945 ralcom2 3362 dfid3 5548 nfriotad 7388 axextnd 10676 axrepndlem1 10677 axrepndlem2 10678 axrepnd 10679 axunndlem1 10680 axunnd 10681 axpowndlem2 10683 axpowndlem3 10684 axpowndlem4 10685 axpownd 10686 axregndlem2 10688 axregnd 10689 axinfndlem1 10690 axinfnd 10691 axacndlem4 10695 axacndlem5 10696 axacnd 10697 axsepg2 35808 axsepg5 35812 axnulg 35813 axpowg2 35815 axpowg3 35816 axextdist 36561 axextbdist 36562 distel 36565 axtcond 37266 mh-setindnd 37325 wl-cbvalnaed 38465 wl-2sb6d 38491 wl-sbalnae 38495 wl-mo2df 38503 wl-mo2tf 38504 wl-eudf 38505 wl-eutf 38506 ax6e2ndeq 45542 ax6e2ndeqVD 45891 |
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