| Metamath Proof Explorer |
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| Description: If a set has elements, it is not empty. |
| Ref | Expression |
|---|---|
| ne0i |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | n0i 2285 |
. 2
| |
| 2 | df-ne 1587 |
. 2
| |
| 3 | 1, 2 | sylibr 200 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: inelcm 2323 rexn0 2356 snnz 2458 prnz 2459 tpnz 2460 exss 2769 onnmin 3015 ord0eln0 3023 onne0 3033 onnev 3242 elfvdm 3747 isofrlem 3901 f1oweALT 3906 oe1m 4179 oawordeulem 4188 oa00 4193 oarec 4196 omord 4199 oewordri 4219 oeworde 4220 oeordsuc 4221 oelim2 4222 unblem1 4540 inf1 4607 noinfep 4640 zfregs 4647 aceq5lem2 4736 kmlem6 4770 alephval2 4902 addclpi 5020 mulclpi 5021 indpi 5034 1pr 5117 infmrcl 6069 flval3t 6239 eliooxrt 6387 iccsupr 6398 fseqsupcl 6525 fseqsupub 6526 seq1ublem 6911 climsup 7155 caucvglem2 7158 cvgcmpub 7185 infcvgaux1 7219 ruclem33 7542 clscld 7683 qdensere 7751 cnpco 7769 blne0 7846 caun0 7945 lmsslem 7952 bcth 8032 ghgrpilem4 8136 nvo00 8424 nmorepnf 8431 ubthlem6 8534 pilem2 8672 pilem3 8673 axgroth3 8779 projlem8 9193 shintclt 9294 chintclt 9296 hsupval2t 9300 nmoprepnf 9794 nmfnrepnf 9807 efilcp 10572 efilcpOLD 10573 efilcp2 10581 efilcp2OLD 10582 cnfilca 10583 cnfilcaOLD 10584 relrded 10675 relrcat 10696 hine 10725 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-12 968 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 981 df-sb 1172 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-v 1812 df-dif 2049 df-nul 2281 |