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  • 简介:Abstract.LetGbeasimplegraph.ThecyclicbandwidthsumproblemistodeterminealabelingofgraphGinacyclesuchthatthetotallengthofedgesisassmallaspossible.Inthispaper,someupperandlowerboundsoncyclicbandwidthsumofgraphsarestudied.

  • 标签: 图论 循环带宽 下界 简单图 组合学
  • 简介:AgraphGisκ-orderedHamiltonian2≤κ≤n,ifforeveryorderedsequenceSofκdistinctverticesofG,thereexistsaHamiltoniancyclethatencountersSinthegivenorder,Inthisarticle,weprovethatifGisagraphonnverticeswithdegreesumofnonadjacentverticesatleastn+3κ-9/2,thenGisκ-orderedHamiltonianforκ=3,4,…,[n/19].Wealsoshowthatthedegreesumboundcanbereducedton+2[κ/2]-2ifκ(G)≥3κ-1/2orδ(G)≥5κ-4.Severalknownresultsaregeneralized.

  • 标签: HAMILTON图
  • 简介:EffectsonSumandDifferencePatternsbyAdaptiveNullXieLiangguiandJiangXinfa(BeijingInstituteofRadioMeasurement,P.O.Box3923,Beijin...

  • 标签: ADAPTIVE NULL SUM and DIFFERENCE patterns
  • 简介:ByusingtheLagrange'sintermediatevaluetheorem,itisderivedmathematicallythatthestructur-aldistortionofacoordinationpolyhedronmayleadtoanincreaseinbond-valencesumofthecen-tralatomofion.Theapplicabilitiesofthebond-valencemodelarediscussedinthefollowingtwocases:themodelingofcrystalstructure,andtheindicationofdistortiondegreeofacoordinationpolyhedron.Alsoitisshownthatadistortedpolyhedronshouldbeinfavorofalongeraveragebondlengthorasmallercoordinationnumber.

  • 标签: 化合价 无机晶体结构 拉格朗日中值定理 多面体
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  • 简介:一份格式简约、语言地道的英文简历是进入外企的“敲门砖”。如何写好英文简历呢?本文作者介绍了其在内容、形式、语言等各方面应遵循的基本原则.并提出了切实可行的建议,但愿对大家能有所帮助。

  • 标签: 英文简历 英语写作 写作内容 写作形式 语言特点
  • 简介:Rèsumèonnewmonograph“AdvanceinMathematicalSeismology”edit┐edbyJunjiKoyama&FengDeyiThenewmonograph“AdvanceinMathematicalSeismo...

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  • 简介:我们描绘所有功能f:以便f(m2+n2)=f(m)2+f(n)2为所有m,n。结果,都,如此的功能能被组织进三个家庭,也就是f0,f(n)=

  • 标签: 特征函数 算术函数 操作 平方