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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 4276. (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 4276 | . 2 ⊢ (𝐴 ∈ 𝐵 → 𝐵 ≠ ∅) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ 𝐵 ≠ ∅ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2119 ≠ wne 2935 ∅c0 4268 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2712 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-ne 2936 df-dif 3893 df-nul 4269 |
| This theorem is referenced by: vn0ALT 4281 prnz 4716 tpnz 4718 pwne0 5292 onn0 6383 oawordeulem 8486 noinfep 9579 fin23lem31 10263 isfin1-3 10306 omina 10612 nnunb 12431 rpnnen1lem4 12928 rpnnen1lem5 12929 rexfiuz 15308 caurcvg 15637 caurcvg2 15638 caucvg 15639 infcvgaux1i 15820 divalglem2 16362 pc2dvds 16848 vdwmc2 16948 cnsubglem 21398 cnmsubglem 21412 pzriprnglem4 21466 pmatcollpw3 22774 zfbas 23886 nrginvrcn 24682 lebnumlem3 24955 caun0 25273 cnflduss 25348 cnfldcusp 25349 reust 25373 recusp 25374 nulmbl2 25528 itg2seq 25734 itg2monolem1 25742 c1lip1 25989 aannenlem2 26320 logbmpt 26777 tgcgr4 28624 shintcl 31426 chintcl 31428 nmoprepnf 31963 nmfnrepnf 31976 nmcexi 32122 snct 32811 constrext2chnlem 33941 constrfiss 33942 esum0 34240 esumpcvgval 34269 bnj906 35119 satf0 35607 fmla1 35622 prv0 35665 bj-tagn0 37339 taupi 37690 ismblfin 38035 volsupnfl 38039 itg2addnclem 38045 ftc1anc 38075 incsequz 38122 isbnd3 38158 ssbnd 38162 onexomgt 43693 dflim5 43781 corclrcl 44158 imo72b2lem2 44618 imo72b2lem1 44620 imo72b2 44623 amgm2d 44649 nnn0 45829 ren0 45852 ioodvbdlimc1 46383 ioodvbdlimc2 46385 stirlinglem13 46536 fourierdlem103 46659 fourierdlem104 46660 fouriersw 46681 2zlidl 48738 termc2 50015 |
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