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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 2928 | . 2 ⊢ Ⅎ𝑥𝐴 | |
| 2 | 1 | a1i 11 | 1 ⊢ (𝜑 → Ⅎ𝑥𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 Ⅎwnfc 2913 |
| 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 2915 |
| This theorem is used by: nfeld 2939 ralcom2 3369 cbvexeqsetf 3473 sbcralt 3828 sbcrext 3829 csbie2t 3894 sbcco3gw 4393 sbcco3g 4398 csbco3g 4399 dfnfc2 4899 eusvnfb 5369 eusv2i 5370 dfid3 5564 iota2d 6531 iota2 6532 fmptcof 7133 nfriotadw 7388 riotaeqimp 7406 riota5f 7408 riota5 7409 oprabid 7455 opiota 8065 fmpoco 8099 nfttrcld 9689 axrepndlem1 10595 axrepndlem2 10596 axunnd 10599 axpowndlem2 10601 axpowndlem3 10602 axpowndlem4 10603 axpownd 10604 axregndlem2 10606 axinfndlem1 10608 axinfnd 10609 axacndlem4 10613 axacndlem5 10614 axacnd 10615 nfnegd 11470 prodsn 16042 fprodeq0g 16074 bpolylem 16127 pcmpt 16977 nfchnd 18692 chfacfpmmulfsupp 23057 elmptrab 24021 dvfsumrlim3 26229 itgsubstlem 26244 itgsubst 26245 ifeqeqx 32925 disjunsn 32976 axsepg2 35577 axnulg 35582 axpowg2 35584 axpowg3 35585 bj-elgab 37616 bj-gabima 37617 wl-issetft 38278 unirep 38406 riotasv2d 39772 cdleme31so 41194 cdleme31se 41197 cdleme31sc 41199 cdleme31sde 41200 cdleme31sn2 41204 cdlemeg47rv2 41325 cdlemk41 41735 mapdheq 42543 hdmap1eq 42616 hdmapval2lem 42646 monotuz 43709 oddcomabszz 43712 mnringvald 44978 nfxnegd 46196 fprodsplit1 46350 dvnmul 46698 sge0sn 47134 hoidmvlelem3 47352 |
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