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| Mirrors > Home > MPE Home > Th. List > nfcvd | Structured version Visualization version GIF version | ||
| Description: If 𝑥 is disjoint from 𝐴, then 𝑥 is not free in 𝐴. (Contributed by Mario Carneiro, 7-Oct-2016.) |
| Ref | Expression |
|---|---|
| nfcvd | ⊢ (𝜑 → Ⅎ𝑥𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nfcv 2922 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | 1 | a1i 11 | 1 ⊢ (𝜑 → Ⅎ𝑥𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 Ⅎwnfc 2907 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-5 1942 |
| This proof depends on definitions: df-bi 210 df-ex 1812 df-nf 1816 df-nfc 2909 |
| This theorem is used by: nfeld 2933 ralcom2 3362 cbvexeqsetf 3465 sbcralt 3818 sbcrext 3819 csbie2t 3884 sbcco3gw 4382 sbcco3g 4387 csbco3g 4388 dfnfc2 4888 eusvnfb 5354 eusv2i 5355 dfid3 5548 iota2d 6526 iota2 6527 fmptcof 7131 nfriotadw 7385 riotaeqimp 7403 riota5f 7405 riota5 7406 oprabid 7452 opiota 8070 fmpoco 8107 nfttrcld 9714 axrepndlem1 10680 axrepndlem2 10681 axunnd 10684 axpowndlem2 10686 axpowndlem3 10687 axpowndlem4 10688 axpownd 10689 axregndlem2 10691 axinfndlem1 10693 axinfnd 10694 axacndlem4 10698 axacndlem5 10699 axacnd 10700 nfnegd 11555 prodsn 16134 fprodeq0g 16166 bpolylem 16219 pcmpt 17075 nfchnd 18790 chfacfpmmulfsupp 23186 elmptrab 24151 dvfsumrlim3 26358 itgsubstlem 26373 itgsubst 26374 ifeqeqx 33185 disjunsn 33235 axsepg2 35864 axnulg 35869 axpowg2 35871 axpowg3 35872 bj-elgab 37944 bj-gabima 37945 wl-issetft 38607 unirep 38741 riotasv2d 40107 cdleme31so 41529 cdleme31se 41532 cdleme31sc 41534 cdleme31sde 41535 cdleme31sn2 41539 cdlemeg47rv2 41660 cdlemk41 42070 mapdheq 42878 hdmap1eq 42951 hdmapval2lem 42981 monotuz 44041 oddcomabszz 44044 mnringvald 45304 nfxnegd 46544 fprodsplit1 46698 dvnmul 47046 sge0sn 47482 hoidmvlelem3 47700 |
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