特殊的极小谱任意符号模式矩阵的研究、.pdf

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7、ªÝ…§1ªÑ´Ì?¿ÎÒªÝ"1oÙé˜a#4Ì?¿ÎÒªÝ,$^˜"-äŒ'•{y²§´Ì?¿ÎÒªÝ,¿…´4Ì?¿ÎÒªÝ"'…cµÎÒªÝ,%¹˜",Ì,Ì?¿1I•¥ŒÆÆØ©ABSTRACTSignpatternmatrixisaveryactiveresearchtopicincombinatorialmatrixtheory,andoneoftheimportantreasonsisthatithaswideapplicationinmanysubjectssuchaseconomics,biology,chemistry,sociology

8、andcomputerscience.Inthispaper,werstlycomparedthestructuremethodwiththeNilpotent-Jacobimethod.Thenwecharacterizeanewclassofsignpatternswhichareminimallyspectrallyarbitrarysignpatternsandaclassofminimallyspectrallyarbitrarys