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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 4295. (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 4295 | . 2 ⊢ (𝐴 ∈ 𝐵 → 𝐵 ≠ ∅) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ 𝐵 ≠ ∅ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2114 ≠ wne 2933 ∅c0 4287 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-ne 2934 df-dif 3906 df-nul 4288 |
| This theorem is referenced by: vn0ALT 4300 prnz 4736 tpnz 4738 pwne0 5304 onn0 6391 oawordeulem 8491 noinfep 9581 fin23lem31 10265 isfin1-3 10308 omina 10614 nnunb 12409 rpnnen1lem4 12905 rpnnen1lem5 12906 rexfiuz 15283 caurcvg 15612 caurcvg2 15613 caucvg 15614 infcvgaux1i 15792 divalglem2 16334 pc2dvds 16819 vdwmc2 16919 cnsubglem 21382 cnmsubglem 21397 pzriprnglem4 21451 pmatcollpw3 22740 zfbas 23852 nrginvrcn 24648 lebnumlem3 24930 caun0 25249 cnflduss 25324 cnfldcusp 25325 reust 25349 recusp 25350 nulmbl2 25505 itg2seq 25711 itg2monolem1 25719 c1lip1 25970 aannenlem2 26305 logbmpt 26766 tgcgr4 28615 shintcl 31417 chintcl 31419 nmoprepnf 31954 nmfnrepnf 31967 nmcexi 32113 snct 32801 constrext2chnlem 33927 constrfiss 33928 esum0 34226 esumpcvgval 34255 bnj906 35105 satf0 35585 fmla1 35600 prv0 35643 bj-tagn0 37224 taupi 37575 ismblfin 37909 volsupnfl 37913 itg2addnclem 37919 ftc1anc 37949 incsequz 37996 isbnd3 38032 ssbnd 38036 onexomgt 43595 dflim5 43683 corclrcl 44060 imo72b2lem2 44520 imo72b2lem1 44522 imo72b2 44525 amgm2d 44551 nnn0 45733 ren0 45757 ioodvbdlimc1 46288 ioodvbdlimc2 46290 stirlinglem13 46441 fourierdlem103 46564 fourierdlem104 46565 fouriersw 46586 hoicvr 46903 2zlidl 48597 termc2 49874 |
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