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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 4296. (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 4296 | . 2 ⊢ (𝐴 ∈ 𝐵 → 𝐵 ≠ ∅) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ 𝐵 ≠ ∅ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2145 ≠ wne 2960 ∅c0 4288 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-ext 2737 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-tru 1566 df-fal 1576 df-ex 1803 df-sb 2094 df-clab 2744 df-cleq 2757 df-clel 2840 df-ne 2961 df-dif 3910 df-nul 4289 |
| This theorem is referenced by: vn0ALT 4301 prnz 4739 tpnz 4741 pwne0 5318 onn0 6416 oawordeulem 8527 noinfep 9617 fin23lem31 10315 isfin1-3 10358 omina 10664 nnunb 12491 rpnnen1lem4 12995 rpnnen1lem5 12996 rexfiuz 15389 caurcvg 15718 caurcvg2 15719 caucvg 15720 infcvgaux1i 15901 divalglem2 16443 pc2dvds 16929 vdwmc2 17029 cnsubglem 21526 cnmsubglem 21540 pzriprnglem4 21594 pmatcollpw3 22902 zfbas 24014 nrginvrcn 24810 lebnumlem3 25083 caun0 25401 cnflduss 25476 cnfldcusp 25477 reust 25501 recusp 25502 nulmbl2 25656 itg2seq 25862 itg2monolem1 25870 c1lip1 26117 aannenlem2 26451 logbmpt 26911 tgcgr4 28758 shintcl 31591 chintcl 31593 nmoprepnf 32128 nmfnrepnf 32141 nmcexi 32287 snct 32969 constrext2chnlem 34057 constrfiss 34058 esum0 34356 esumpcvgval 34385 bnj906 35235 satf0 35735 fmla1 35750 prv0 35793 bj-tagn0 37476 taupi 37827 ismblfin 38172 volsupnfl 38176 itg2addnclem 38182 ftc1anc 38212 incsequz 38259 isbnd3 38295 ssbnd 38299 onexomgt 43830 dflim5 43918 corclrcl 44295 imo72b2lem2 44755 imo72b2lem1 44757 imo72b2 44760 amgm2d 44786 nnn0 45951 ren0 45974 ioodvbdlimc1 46505 ioodvbdlimc2 46507 stirlinglem13 46658 fourierdlem103 46781 fourierdlem104 46782 fouriersw 46803 2zlidl 48860 termc2 50147 |
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