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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 2186 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 1890 | 1 ⊢ Ⅎ𝑧 ¬ ∀𝑥 𝑥 = 𝑦 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 ∀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-10 2178 ax-11 2194 ax-12 2213 ax-13 2401 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-tru 1573 df-ex 1813 df-nf 1817 |
| 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 5546 nfriotad 7377 axextnd 10633 axrepndlem1 10634 axrepndlem2 10635 axrepnd 10636 axunndlem1 10637 axunnd 10638 axpowndlem2 10640 axpowndlem3 10641 axpowndlem4 10642 axpownd 10643 axregndlem2 10645 axregnd 10646 axinfndlem1 10647 axinfnd 10648 axacndlem4 10652 axacndlem5 10653 axacnd 10654 axsepg2 35727 axsepg5 35731 axnulg 35732 axpowg2 35734 axpowg3 35735 axextdist 36477 axextbdist 36478 distel 36481 axtcond 37182 mh-setindnd 37241 wl-cbvalnaed 38378 wl-2sb6d 38404 wl-sbalnae 38408 wl-mo2df 38416 wl-mo2tf 38417 wl-eudf 38418 wl-eutf 38419 ax6e2ndeq 45480 ax6e2ndeqVD 45829 |
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