| 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 3064 | . 2 ⊢ (∃𝑥 ∈ 𝐴 𝜑 ↔ ∃𝑥(𝑥 ∈ 𝐴 ∧ 𝜑)) | |
| 2 | nfe1 2161 | . 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 396 ∃wex 1786 Ⅎwnf 1790 ∈ wcel 2119 ∃wrex 3063 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-10 2152 |
| This theorem depends on definitions: df-bi 208 df-ex 1787 df-nf 1791 df-rex 3064 |
| This theorem is referenced by: 2rmorex 3695 2reurex 3701 reuan 3828 2reu4lem 4451 nfiu1 4957 reusv2lem3 5329 fvelimad 6894 fsnex 7227 eusvobj2 7348 fiun 7885 f1iun 7886 zfregclOLD 9500 scott0 9801 ac6c4 10394 lbzbi 12877 mreiincl 17549 lss1d 20953 neiptopnei 23115 neitr 23163 utopsnneiplem 24230 cfilucfil 24542 2sqmo 27418 nosupbnd2 27698 noinfbnd2 27713 mpteleeOLD 28982 isch3 31330 atom1d 32442 opreu2reuALT 32564 iinabrex 32658 xrofsup 32859 locfinreflem 34024 esumc 34235 esumrnmpt2 34252 hasheuni 34269 esumcvg 34270 esumcvgre 34275 voliune 34413 volfiniune 34414 ddemeas 34420 eulerpartlemgvv 34560 bnj900 35111 bnj1189 35191 bnj1204 35194 bnj1398 35216 bnj1444 35225 bnj1445 35226 bnj1446 35227 bnj1447 35228 bnj1467 35236 bnj1518 35246 bnj1519 35247 iooelexlt 37724 fvineqsneq 37774 ptrest 37986 poimirlem26 38013 indexa 38100 filbcmb 38107 sdclem1 38110 heibor1 38177 dihglblem5 41790 unielss 43663 oaun3lem1 43819 suprnmpt 45621 disjinfi 45639 upbdrech 45753 ssfiunibd 45757 infxrunb2 45812 supxrunb3 45843 iccshift 45963 iooshift 45967 islpcn 46082 limsupre 46084 limclner 46094 limsupre3uzlem 46178 climuzlem 46186 xlimmnfv 46277 xlimpnfv 46281 itgperiod 46424 stoweidlem53 46496 stoweidlem57 46500 fourierdlem48 46597 fourierdlem51 46600 fourierdlem73 46622 fourierdlem81 46630 elaa2 46677 etransclem32 46709 sge0iunmptlemre 46858 voliunsge0lem 46915 meaiuninc3v 46927 isomenndlem 46973 ovnsubaddlem1 47013 hoidmvlelem1 47038 hoidmvlelem5 47042 smfaddlem1 47206 2reu7 47574 2reu8 47575 f1oresf1o2 47754 mogoldbb 48276 2zrngagrp 48740 2zrngmmgm 48743 |
| Copyright terms: Public domain | W3C validator |