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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 2113 ≠ wne 2932 ∅c0 4285 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-ne 2933 df-dif 3904 df-nul 4286 |
| This theorem is referenced by: vn0ALT 4298 prnz 4734 tpnz 4736 pwne0 5302 onn0 6383 oawordeulem 8481 noinfep 9569 fin23lem31 10253 isfin1-3 10296 omina 10602 nnunb 12397 rpnnen1lem4 12893 rpnnen1lem5 12894 rexfiuz 15271 caurcvg 15600 caurcvg2 15601 caucvg 15602 infcvgaux1i 15780 divalglem2 16322 pc2dvds 16807 vdwmc2 16907 cnsubglem 21370 cnmsubglem 21385 pzriprnglem4 21439 pmatcollpw3 22728 zfbas 23840 nrginvrcn 24636 lebnumlem3 24918 caun0 25237 cnflduss 25312 cnfldcusp 25313 reust 25337 recusp 25338 nulmbl2 25493 itg2seq 25699 itg2monolem1 25707 c1lip1 25958 aannenlem2 26293 logbmpt 26754 tgcgr4 28603 shintcl 31405 chintcl 31407 nmoprepnf 31942 nmfnrepnf 31955 nmcexi 32101 snct 32791 constrext2chnlem 33907 constrfiss 33908 esum0 34206 esumpcvgval 34235 bnj906 35086 satf0 35566 fmla1 35581 prv0 35624 bj-tagn0 37180 taupi 37528 ismblfin 37862 volsupnfl 37866 itg2addnclem 37872 ftc1anc 37902 incsequz 37949 isbnd3 37985 ssbnd 37989 onexomgt 43483 dflim5 43571 corclrcl 43948 imo72b2lem2 44408 imo72b2lem1 44410 imo72b2 44413 amgm2d 44439 nnn0 45622 ren0 45646 ioodvbdlimc1 46177 ioodvbdlimc2 46179 stirlinglem13 46330 fourierdlem103 46453 fourierdlem104 46454 fouriersw 46475 hoicvr 46792 2zlidl 48486 termc2 49763 |
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