简介:FranklandFürediin[1]conjecturedthatther-graphwithmedgesformedbytakingthefirstmsetsinthecolexorderingofN(r)hasthelargestLagrangianofallr-graphswithmedges.Denotethisr-graphbyCr,mandtheLagrangianofahypergraphbyλ(G).Inthispaper,wefirstshowthatif(3t-1)≤m<(3t),Gisaleft-compressed3-graphwithmedgesandonvertexset[t],thetriplewithminimumcolexorderinginGcis(t—2—i)(t—2)t,thenλ(G)≤λ(C3,m).Asanimplication,theconjectureofFranklandFiirediistruefor(3t)-6≤m≤(3t).
简介:极度夸张的语言是极度虚伪的社会的反映。如今,社会需要的是'百灵鸟',即日出时你刚好在场。俗话说:'枪打出头鸟。'过于彰显自己的人免不了招来一些异样的眼光,也许你认为这是一次展现自己的好机会,但是小坏小怪总是招人厌恨,而大坏大怪总是被人敬仰。转而谈及八面玲珑的'九头鸟',另一种说法即是处事圆滑,这多多少少听起来有些讽刺。自古以
简介:Fornon-negativeintegersi,jandk,wedenotethegeneralizednetasN_(i,j,k),whichisatrianglewithdisjointpathsoflengthi,jandk,attachedtodistinctverticesofthetriangle.Inthispaper,weprovethatevery3-connected{K_(1,3),N_(8-i,i,1}-freegraphishamiltonian,where1≤i≤4.
简介:采用溶胶-凝胶工艺,以Ni(Ac)2、La(NO3)3为前驱原料,以乙醇和乙二醇甲醚为溶剂,以丙烯酸为稳定剂,乙酰丙酮(AcAc)为化学修饰剂制备了感光性LNO溶胶。通过其溶胶的紫外和红外吸收光谱研究了感光性LNO溶胶的紫外感光机理,并运用溶胶-凝胶直接感光法制备出LNO薄膜的微细图形。