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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 2404. Use the weaker nfnaew 2189 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 2465 | . 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 1945 ax-6 2002 ax-7 2043 ax-10 2180 ax-11 2197 ax-12 2216 ax-13 2404 |
| 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 2477 dvelimf 2480 sbequ6 2498 2ax6elem 2502 nfsb4t 2531 sbco2 2543 sbco3 2545 sb9 2551 sbal1 2560 sbal2 2561 nfabd2 2949 ralcom2 3366 dfid3 5553 nfriotad 7408 axextnd 10700 axrepndlem1 10701 axrepndlem2 10702 axrepnd 10703 axunndlem1 10704 axunnd 10705 axpowndlem2 10707 axpowndlem3 10708 axpowndlem4 10709 axpownd 10710 axregndlem2 10712 axregnd 10713 axinfndlem1 10714 axinfnd 10715 axacndlem4 10719 axacndlem5 10720 axacnd 10721 axsepg2 35907 axsepg5 35911 axnulg 35912 axpowg2 35914 axpowg3 35915 axextdist 36738 axextbdist 36739 distel 36742 axtcond 37443 mh-setindnd 37502 wl-cbvalnaed 38655 wl-2sb6d 38681 wl-sbalnae 38685 wl-mo2df 38693 wl-mo2tf 38694 wl-eudf 38695 wl-eutf 38696 ax6e2ndeq 45731 ax6e2ndeqVD 46080 |
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