简介:TheinteractionbetweenC60’sinsolidC60hasbeencalculatedby(exp-6-1)potential,andthecauseandthecontrolledfactorofthehighrapidrotationsofC60’swerediscussed.InordertodescribethedisordereddegreeofC60rotation,anequivalentMisintroduced.Thephasetransitionsatthe~260Kandatthe~90KarestudiedfromtheviewpointofC60rotation.Thepotentialbarriersoftheorderedrotationbelowthe~260Kandthedisorderedrotationabovethe~260Khavebeengiven,andtheeffectoftheexternalpressureonthetemperatureofphasetransitionhasalsobeengiven.
简介:A.simplicialmesh(triangulation)isconstructedthatgeneralizesthetwo-dimensional4-directionmeshtoR~m.Thismesh,withsymmetric,shift-invariantvaluesatthevertices,isshowntoadmitaboundedC~1interpolantifandonlyifthealternatingsumofthevaluesattheverticesofany1-cubeiszero.Thisim-pliesthaiinterpolationattheverticesofanm-dimensional,simplicialmeshbyaC~1piecewisepolynomialofdegreem+1withonepiecepersimplexisunstable.
简介:摘要C语言程序设计是技工学校计算机专业的一门非常重要的必修课,该语言所设计的规则繁多,概念复杂,在调试过程中容易出错,但是又不容易发现错误,使得很多学生很头疼,这就要求教师在教的过程中要注重方法、策略,才能让学生乐学,学好。
简介:获得了HilbertC^*-模之间的两个同构定理.作为推论,证明了C^*-代数上每个可数生成的HilbertC^*-模均稳定酉等价于A。
简介:LetAbeaunitalC*-algebra,n∈N∪{∞}.Itisprovedthattheisomorphism△n:Un0(A)/DUn0(A)→AffT(A)/△n0(π1(Un0(A)))isisometricforsomesuitabledistances.Asanapplication,theauthorhasthesplitexactsequence0→AffT(A)/△n0(π1(Un0(A)))iA→Un(A)/DUn(A)πA→Un(A)/Un0(A)→0withiAcontractive(andisometricifn=∞)undercertainconditionofA.
简介:近些年雪铁龙又重新发力,回到了他们的源头,即为追求特别的人们提供舒适、古怪的汽车.他们最新推出的C-Aircross概念车带来了全新凑型SU的可能性,也表明了雪铁龙有能力与众不同.独特的设计语言赋予了SUV更多的动感.让人眼前一亮的配色,流畅的车身线条,通风采光良好的座舱,再加上给予人温暖感的面料,给予人便捷的技术,都让人见识到了雪铁龙进军紧凑型SUV市场的决心和信心.