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简介：

简介：ItwasFridayafternoon.Aschoolmeetingwasheldontheplayground.Lily,mydeskmate,lookedveryexcitedBecausesheforthefirsttimehadwonthefirstplaceinthefinalexamination.Butbeforethisshewasthoughtnottobeclever.Sheoftenaskedfoolishquestionsthatmadeherclassmateslaughather.

简介：Itisprovedthatthereisnochaoticgroupactionsonanytopologicalspacewithfreearc.InthispaperthechaoticactionsofthegrouplikeG×F,whereFisafinitegroup,arestudied.Inparticular,underasuitableassumption,ifFisacyclicgroup,thenthetopologicalspacewhichadmitsachaoticactionofZ×Fmustadmitachatotichomeomorphism.Atopologicalspacewhichadmitsachaoticgroupactionbutadmitsnochaotichorneomorphismisconstructed.

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简介：

简介：如果X是一条弧或一个圆，那么，X上没有广泛的同胚，是众所周知的。在我们证明那的这篇论文，X上没有广泛的Z~d行动，它回答以前我们提出的二个问题。在1979，鬃毛证明在无限的维的空格没有广泛的同胚。与这结果相反，我们在一个无限的维的空格构造广泛的Z~2action。我们也在Z~2在零个维的空格而是没有元素构造一个广泛的Z~2行动是广泛的。

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简介：ThispaperpresentsacomparisonbetweentheChineseCodeGB50011-2001andtheInternationalStandardISO3010:2001(E),emphasizingthesimilaritiesanddifferencesrelatedtodesignrequirements,seismicactionsandanalyticalapproaches.Similaritiesinclude:earthquakereturnperiod,conceptualdesign,siteclassification,structuralstrengthandductilityrequirements,deformationlimits,responsespectra,seismicanalysisprocedures,isolationandenergydissipation,andnonstructuralelements.Differencesexistinthefollowingareas:seismiclevels,earthquakeloading,modedampingfactorsandstructuralcontrol.