Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > nfre1 | Structured version Visualization version GIF version |
Description: The setvar 𝑥 is not free in ∃𝑥 ∈ 𝐴𝜑. (Contributed by NM, 19-Mar-1997.) (Revised by Mario Carneiro, 7-Oct-2016.) |
Ref | Expression |
---|---|
nfre1 | ⊢ Ⅎ𝑥∃𝑥 ∈ 𝐴 𝜑 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-rex 3057 | . 2 ⊢ (∃𝑥 ∈ 𝐴 𝜑 ↔ ∃𝑥(𝑥 ∈ 𝐴 ∧ 𝜑)) | |
2 | nfe1 2153 | . 2 ⊢ Ⅎ𝑥∃𝑥(𝑥 ∈ 𝐴 ∧ 𝜑) | |
3 | 1, 2 | nfxfr 1860 | 1 ⊢ Ⅎ𝑥∃𝑥 ∈ 𝐴 𝜑 |
Colors of variables: wff setvar class |
Syntax hints: ∧ wa 399 ∃wex 1787 Ⅎwnf 1791 ∈ wcel 2112 ∃wrex 3052 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-10 2143 |
This theorem depends on definitions: df-bi 210 df-ex 1788 df-nf 1792 df-rex 3057 |
This theorem is referenced by: 2rmorex 3656 2reurex 3662 reuan 3795 2reu4lem 4423 nfiu1 4924 reusv2lem3 5278 fvelimad 6757 fsnex 7071 eusvobj2 7184 fiun 7694 f1iun 7695 zfregcl 9188 scott0 9467 ac6c4 10060 lbzbi 12497 mreiincl 17053 lss1d 19954 neiptopnei 21983 neitr 22031 utopsnneiplem 23099 cfilucfil 23411 2sqmo 26272 mptelee 26940 isch3 29276 atom1d 30388 opreu2reuALT 30498 iinabrex 30581 xrofsup 30764 locfinreflem 31458 esumc 31685 esumrnmpt2 31702 hasheuni 31719 esumcvg 31720 esumcvgre 31725 voliune 31863 volfiniune 31864 ddemeas 31870 eulerpartlemgvv 32009 bnj900 32576 bnj1189 32656 bnj1204 32659 bnj1398 32681 bnj1444 32690 bnj1445 32691 bnj1446 32692 bnj1447 32693 bnj1467 32701 bnj1518 32711 bnj1519 32712 nosupbnd2 33605 noinfbnd2 33620 iooelexlt 35219 fvineqsneq 35269 ptrest 35462 poimirlem26 35489 indexa 35577 filbcmb 35584 sdclem1 35587 heibor1 35654 dihglblem5 38998 suprnmpt 42324 disjinfi 42345 upbdrech 42458 ssfiunibd 42462 infxrunb2 42521 supxrunb3 42553 iccshift 42672 iooshift 42676 islpcn 42798 limsupre 42800 limclner 42810 limsupre3uzlem 42894 climuzlem 42902 xlimmnfv 42993 xlimpnfv 42997 itgperiod 43140 stoweidlem53 43212 stoweidlem57 43216 fourierdlem48 43313 fourierdlem51 43316 fourierdlem73 43338 fourierdlem81 43346 elaa2 43393 etransclem32 43425 sge0iunmptlemre 43571 voliunsge0lem 43628 meaiuninc3v 43640 isomenndlem 43686 ovnsubaddlem1 43726 hoidmvlelem1 43751 hoidmvlelem5 43755 smfaddlem1 43913 2reu7 44218 2reu8 44219 f1oresf1o2 44398 mogoldbb 44853 2zrngagrp 45117 2zrngmmgm 45120 |
Copyright terms: Public domain | W3C validator |