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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 2923 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | 1 | a1i 11 | 1 ⊢ (𝜑 → Ⅎ𝑥𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 Ⅎwnfc 2908 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-5 1943 |
| This proof depends on definitions: df-bi 210 df-ex 1813 df-nf 1817 df-nfc 2910 |
| This theorem is used by: nfeld 2934 ralcom2 3363 cbvexeqsetf 3466 sbcralt 3819 sbcrext 3820 csbie2t 3885 sbcco3gw 4383 sbcco3g 4388 csbco3g 4389 dfnfc2 4889 eusvnfb 5355 eusv2i 5356 dfid3 5549 iota2d 6519 iota2 6520 fmptcof 7123 nfriotadw 7377 riotaeqimp 7395 riota5f 7397 riota5 7398 oprabid 7444 opiota 8059 fmpoco 8095 nfttrcld 9695 axrepndlem1 10658 axrepndlem2 10659 axunnd 10662 axpowndlem2 10664 axpowndlem3 10665 axpowndlem4 10666 axpownd 10667 axregndlem2 10669 axinfndlem1 10671 axinfnd 10672 axacndlem4 10676 axacndlem5 10677 axacnd 10678 nfnegd 11533 prodsn 16109 fprodeq0g 16141 bpolylem 16194 pcmpt 17050 nfchnd 18765 chfacfpmmulfsupp 23161 elmptrab 24126 dvfsumrlim3 26333 itgsubstlem 26348 itgsubst 26349 ifeqeqx 33120 disjunsn 33170 axsepg2 35781 axnulg 35786 axpowg2 35788 axpowg3 35789 bj-elgab 37822 bj-gabima 37823 wl-issetft 38482 unirep 38616 riotasv2d 39982 cdleme31so 41404 cdleme31se 41407 cdleme31sc 41409 cdleme31sde 41410 cdleme31sn2 41414 cdlemeg47rv2 41535 cdlemk41 41945 mapdheq 42753 hdmap1eq 42826 hdmapval2lem 42856 monotuz 43901 oddcomabszz 43904 mnringvald 45170 nfxnegd 46395 fprodsplit1 46549 dvnmul 46897 sge0sn 47333 hoidmvlelem3 47551 |
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