| 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 2275 |
. 2
| |
| 2 | df-ne 1579 |
. 2
| |
| 3 | 1, 2 | sylibr 200 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: inelcm 2313 rexn0 2346 snnz 2449 prnz 2450 tpnz 2451 exss 2759 onnmin 3005 ord0eln0 3013 onne0 3023 onnev 3232 elfvdm 3732 isofrlem 3886 f1oweALT 3891 oe1m 4163 oawordeulem 4172 oa00 4177 oarec 4180 omord 4183 oewordri 4203 oeworde 4204 oeordsuc 4205 oelim2 4206 unblem1 4517 inf1 4579 noinfep 4612 zfregs 4619 aceq5lem2 4708 kmlem6 4742 alephval2 4874 addclpi 4992 mulclpi 4993 indpi 5006 1pr 5089 infmrcl 6016 flval3t 6182 ioossicc 6330 iccsupr 6331 fseqsupcl 6457 fseqsupub 6458 seq1ublem 6848 climsup 7091 caucvglem2 7094 cvgcmpub 7121 infcvgaux1 7154 ivthlem4OLD 7228 ruclem33 7485 clscld 7625 qdensere 7691 cnpco 7708 blne0 7786 caun0 7880 lmsslem 7887 bcth 7966 ghgrpilem4 8073 nvo00 8356 nmorepnf 8363 ubthlem6 8465 pilem2 8591 pilem3 8592 axgroth3 8718 projlem8 9109 shintclt 9209 chintclt 9211 hsupval2t 9215 nmoprepnf 9711 nmfnrepnf 9724 efilcp 10445 efilcp2 10450 cnfilca 10451 relrded 10519 relrcat 10540 hine 10569 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-10 963 ax-12 965 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 978 df-sb 1168 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-v 1803 df-dif 2039 df-nul 2271 |