简介:AyoungmanaskedAlbertEinstein,thegreatGermanscientist,whatthesecret(秘诀)ofsuccess(成功)is.Thescientisttoldhimthatthesecretofsuccessishardwork.Afewdayslatertheyoungmanaskedhimthesamequestionagain.Einsteinwasveryunhappy.Hedidnotsayanything,butwroteafewwordsonapieceofpaperandhandedittotheyoungman.Theyoungmanlookedatthepieceofpaper.Onitwaswritten:A=x+y+z.
简介:本文以流行语模“X的Y说Z就Z”为研究内容,通过语音、语义、语法及语用的语言本体研究,运用模因论等分析固定语模复制、传播的过程,探究固定语模“X的Y说Z就Z”的形式与意义,以及产生该语模的内部及外部原因。
简介:Itiswellknownthateveryprimeidealminimaloveraz-idealisalsoaz-ideal.TheconverseisalsowellknowninC(X).ThuswheneverIisanidealinC(X),thenI~(1/2)isaz-idealifandonlyifIis,inwhichcaseI~(1/2)=I.Weshowthesamefactforz~o-idealsandthenitturnsoutthatthesumofaprimaryidealandaz-ideal(z~o-ideal)inC(X)whicharenotinachainisaprimez-ideal(z~o-ideal).Wealsoshowthateverydecomposablez-ideal(z~o-ideal)inC(X)istheintersectionofafinitenumberofprimez-ideals(z~o-ideal).Somecounter-examplesingeneralringsandsomecharacterizationsforthelargest(smallest)z-idealandz~o-idealcontainedin(containing)anidealaregiven.
简介:摘要:利用塞瓦定理,探索三角形共点线“分割比”的内在关系(文中称之为三角形共点线分割比定理),及“分割比”与共点线分割三角形三条边的比例之间的关系。