| 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 3061 | . 2 ⊢ (∃𝑥 ∈ 𝐴 𝜑 ↔ ∃𝑥(𝑥 ∈ 𝐴 ∧ 𝜑)) | |
| 2 | nfe1 2155 | . 2 ⊢ Ⅎ𝑥∃𝑥(𝑥 ∈ 𝐴 ∧ 𝜑) | |
| 3 | 1, 2 | nfxfr 1854 | 1 ⊢ Ⅎ𝑥∃𝑥 ∈ 𝐴 𝜑 |
| Colors of variables: wff setvar class |
| Syntax hints: ∧ wa 395 ∃wex 1780 Ⅎwnf 1784 ∈ wcel 2113 ∃wrex 3060 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-10 2146 |
| This theorem depends on definitions: df-bi 207 df-ex 1781 df-nf 1785 df-rex 3061 |
| This theorem is referenced by: 2rmorex 3712 2reurex 3718 reuan 3846 2reu4lem 4476 nfiu1 4982 nfiu1OLD 4983 reusv2lem3 5345 fvelimad 6901 fsnex 7229 eusvobj2 7350 fiun 7887 f1iun 7888 zfregclOLD 9500 scott0 9798 ac6c4 10391 lbzbi 12849 mreiincl 17515 lss1d 20914 neiptopnei 23076 neitr 23124 utopsnneiplem 24191 cfilucfil 24503 2sqmo 27404 nosupbnd2 27684 noinfbnd2 27699 mpteleeOLD 28968 isch3 31316 atom1d 32428 opreu2reuALT 32551 iinabrex 32644 xrofsup 32847 locfinreflem 33997 esumc 34208 esumrnmpt2 34225 hasheuni 34242 esumcvg 34243 esumcvgre 34248 voliune 34386 volfiniune 34387 ddemeas 34393 eulerpartlemgvv 34533 bnj900 35085 bnj1189 35165 bnj1204 35168 bnj1398 35190 bnj1444 35199 bnj1445 35200 bnj1446 35201 bnj1447 35202 bnj1467 35210 bnj1518 35220 bnj1519 35221 iooelexlt 37567 fvineqsneq 37617 ptrest 37820 poimirlem26 37847 indexa 37934 filbcmb 37941 sdclem1 37944 heibor1 38011 dihglblem5 41558 unielss 43460 oaun3lem1 43616 suprnmpt 45418 disjinfi 45436 upbdrech 45553 ssfiunibd 45557 infxrunb2 45612 supxrunb3 45643 iccshift 45764 iooshift 45768 islpcn 45883 limsupre 45885 limclner 45895 limsupre3uzlem 45979 climuzlem 45987 xlimmnfv 46078 xlimpnfv 46082 itgperiod 46225 stoweidlem53 46297 stoweidlem57 46301 fourierdlem48 46398 fourierdlem51 46401 fourierdlem73 46423 fourierdlem81 46431 elaa2 46478 etransclem32 46510 sge0iunmptlemre 46659 voliunsge0lem 46716 meaiuninc3v 46728 isomenndlem 46774 ovnsubaddlem1 46814 hoidmvlelem1 46839 hoidmvlelem5 46843 smfaddlem1 47007 2reu7 47357 2reu8 47358 f1oresf1o2 47537 mogoldbb 48031 2zrngagrp 48495 2zrngmmgm 48498 |
| Copyright terms: Public domain | W3C validator |