Generalized perron complements of nonnegative and irreducible matrices 分形谱系模型与方法
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The research of unit root related structure change abroad took place mainly in america in 1990s , which included the so - called " perron phenomena " and " partly anti - perron phenomena " 本文主要研究的是前者。国外，有关单位根的结构突变研究主要集中在90年代的美国，即所谓“ perron现象”和“部分逆perron现象”等。
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