简介:让A是现代派的pSteenrod代数学和S在p局部性的范围光谱,在p是一个奇怪的素数的地方。在2001,林在被代表由的范围的稳定的homotopy检测了一个新家庭(b_oh_n-h_1b_(n-1))∈Ext_A~(3,(p~n+p)q)(Z_p,Z_p)在亚当斯光谱顺序。同时,他证明了那i_*(h_1h_n)∈Ext_A~(2,(p~n+p)q)(H~*M,Z_p)是在亚当斯的一个永久周期光谱顺序并且收敛到重要元素ξ_n∈π_((p~n+p)q-2)M。在这糊,与林一起“s结果,我们使用亚当斯光谱顺序和5月光谱检测homotopy元素jj的一个新重要家庭的顺序”j酒吧γ~si酒吧i“在范围的稳定的homotopy组的ξ_n。新的具有度p~nq+sp~2q+spq+(s-2)q+s-6并且被h_1h_nγ_s在E_2~代表直到非零数量(s+2,*)亚当斯的术语光谱顺序,在此p≥7,q=2(p-1),n≥4和3≤s
简介:让p是一个奇怪的素数。在我们介绍的这份报纸,二次的线性p鈥揳lgebraQ1由合适改变Q的发电机获得了,在H鈭炩€搑ing系列的范畴的cohomology操作的同类的二次的代数学,并且仔细看在情况p=相似的商在cohomology上导致的地图2,结果是injective。因此,它的目标包含古典亚当斯的E2鈥搕erm光谱顺序作为subalgebra。对的明确的描述在Q上在合理假设下面被给是Koszul代数学。关键词Koszul代数学-代数学的Cohomology-亚当斯光谱顺序先生(2000)题目分类55S10-18G15-55T15
简介:让(*(M),d)为一个光滑的协议的deRhamcochain建筑群被关上尺寸n的manifoldsM。为奇怪度的关上的形式H,有扭曲的deRhamcochain建筑群(*(M),d+H<潜水艇class=“a-plus-plus”>)和它的联系扭曲的deRhamcohomologyH*(M,H)。作者证明那在那里存在一光谱顺序{Erp,q,dr}源于过滤\(F_p(*M,收敛到扭曲的deRhamcohomologyH,mega^*(M))=\mathop\oplus\limits_{i\geqslantp}\Omega^i(M)\)M,H)。这也被显示出differentials在光谱顺序能也以杯产品和Massey产品的特定的元素被给,它概括Atiyah和Segal的结果。关于differentials的不确定的一些结果也在这份报纸被给。
简介:ADAMS/Aircraft模块是我所创建飞机虚拟样机的软件之一,我们通过该软件建立一些起落架模型,进行了落震分析、动画模拟仿真,计算结果与其他工程软件计算结果吻合。
简介:In1971,thefamousmathematicianGeorgePolya,introducedfourbasicstepsorphasesforsolvingproblems:Step1UnderstandtheProblemStep2DecideonaPlanStep3CarryoutthePlanStep4LookBack
简介:Inthispaper,weareinterestedinHSSpreconditionersforsaddlepointlin-earsystemswithanonzero(2,2)-thblock.WestudyanapproximationofthespectraofHSSpreconditionedmatricesandusetheseresultstoillustrateandexplainthespectraobtainedfromnumericalexamples,wherethepreviousspectralanalysisofHSSprecon-ditionedmatricesdoesnotcover.
简介:Anoverviewispresentedonthestatusofstudiesonmultiplecodesingeneticsequences.Indirectly,theexistenceofmultiplecodesisrecognizedintheformofseveralrediscoveriesofSecondGeneticCodethatisdifferenteachtime.Aduecreditisgiventoearlierseminalworkrelatedtothecodesoftenneglectedinliterature.Thelatestdevelopmentsinthefieldofchromatincodearediscussed,aswellasperspectivesofsingle-baseresolutionstudiesofnucleosomepositioning,includingrotationalsettingofDNAonthesurfaceofthehistoneoctamers.
简介:LetXbeaBanachspaceand{ej}j=1beasequenceinX.Theauthorshowse∞that{ej}∞j+1isabasicsequenceifandonlyif∑n∞=1rnαnjconvergesforeveryj>1ande∞-∞∞e∑∞n=1rn∑∞j=1αnjej=∑j=1(∑∞n=1rnαnj)jholdsforeverychoiceofscalarvariables{αnj}suchthat∑∞n=1αnjejconvergesforeachn>-1andanychoiceofscalarvariables{rn}suchthat∑∞n+1∑∞f=1rnαnjejconverges.Moreover,someapplicationsabouttheresultaregiven.
简介:ThereseearchontherelationbetweenweightedshiftoperatorsonHilbertspacesandotherimportantclassofoperatorsattractedtheattentionofsomemathematicians.Forexample,therelationbetweenweightedshiftoperatorsandsubnormaloperatorshasbeenthoroughlystudiedbyJ.Stampfli,R.GellarandD.A.Herrero,etc.(seereference[1])Butthedecomposabilityofweightedshiftoperatorshasnotyetattractedenoughattentionuptonow.Wemadeinitialresearch
简介:Thespectralpropertiesofnonlineardragforcesofrandomwavesonverticalcircularcylindersareanalyzedinthispaperbymeansofnonlinearspectralanalysis.Theanalysisprovidesbasicparametersforestimationofthecharacteristicdragforces.Numericalcomputationisalsoperformedfortheinvestigationoftheeffectsofnonlinearityofthedragforces.TheresultsindicatethatthewavedragforcescalculatedbylinearwavetheoryarelargerthanthosecalculatedbythethirdorderStokeswavetheoryforgivenwaves.Thedifferencebetweenthemincreaseswithwaveheight.Thewavedragforcescalculatedbyuseoflinearapproximationareabout5%smallerthantheiractualvalueswhenmeasuredinthepeakvaluesofspectraldensities.Thiswillresultinasafetyproblemforthedesignofoffshorestructures.Therefore,thenonlineareffectofwavedragforcesshouldbetakenintoconsiderationindesignandapplicationofimportantoffshorestructures.
简介:Aspectraldiagnosticsofcomplexareplasmausingmultiplespectralinformationofareself-emittingispro-posed.Thismethodisabletosimultaneouslydeterminecomponentdensities,thecorrespondingtemperatureandtheirdis-tributionsbyafewlineintensitiesmeasurent.Theprincipleofthemethodandtherelevantmeasuringsystemarede-scribed.Anequationsystemisestablishedforcomputationofthestatevariablesinareplasma.Anexperimentunderweldingareconditionismadeasanapplicationofthemethod.Theeffectsofprobableerrorsourcesonthemeasurementarealsoanalysed.