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| Mirrors > Home > MPE Home > Th. List > ne0ii | Structured version Visualization version GIF version | ||
| Description: If a class has elements, then it is nonempty. Inference associated with ne0i 4293. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
| Ref | Expression |
|---|---|
| n0ii.1 | ⊢ 𝐴 ∈ 𝐵 |
| Ref | Expression |
|---|---|
| ne0ii | ⊢ 𝐵 ≠ ∅ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | n0ii.1 | . 2 ⊢ 𝐴 ∈ 𝐵 | |
| 2 | ne0i 4293 | . 2 ⊢ (𝐴 ∈ 𝐵 → 𝐵 ≠ ∅) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ 𝐵 ≠ ∅ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2141 ≠ wne 2956 ∅c0 4285 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-tru 1562 df-fal 1572 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-ne 2957 df-dif 3907 df-nul 4286 |
| This theorem is referenced by: vn0ALT 4298 prnz 4735 tpnz 4737 pwne0 5312 onn0 6408 oawordeulem 8518 noinfep 9612 fin23lem31 10297 isfin1-3 10340 omina 10646 nnunb 12474 rpnnen1lem4 12978 rpnnen1lem5 12979 rexfiuz 15358 caurcvg 15687 caurcvg2 15688 caucvg 15689 infcvgaux1i 15870 divalglem2 16412 pc2dvds 16898 vdwmc2 16998 cnsubglem 21448 cnmsubglem 21462 pzriprnglem4 21516 pmatcollpw3 22824 zfbas 23936 nrginvrcn 24732 lebnumlem3 25005 caun0 25323 cnflduss 25398 cnfldcusp 25399 reust 25423 recusp 25424 nulmbl2 25578 itg2seq 25784 itg2monolem1 25792 c1lip1 26039 aannenlem2 26370 logbmpt 26830 tgcgr4 28677 shintcl 31479 chintcl 31481 nmoprepnf 32016 nmfnrepnf 32029 nmcexi 32175 snct 32864 constrext2chnlem 34008 constrfiss 34009 esum0 34307 esumpcvgval 34336 bnj906 35189 satf0 35686 fmla1 35701 prv0 35744 bj-tagn0 37428 taupi 37779 ismblfin 38124 volsupnfl 38128 itg2addnclem 38134 ftc1anc 38164 incsequz 38211 isbnd3 38247 ssbnd 38251 onexomgt 43782 dflim5 43870 corclrcl 44247 imo72b2lem2 44707 imo72b2lem1 44709 imo72b2 44712 amgm2d 44738 nnn0 45917 ren0 45940 ioodvbdlimc1 46471 ioodvbdlimc2 46473 stirlinglem13 46624 fourierdlem103 46747 fourierdlem104 46748 fouriersw 46769 2zlidl 48826 termc2 50103 |
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