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Existence of Multiple Positive Periodic Solutions for Second Order Differential Equations
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作者 Lü Yue Sun Peng +1 位作者 Cai Hua Han Pei-shan 《Communications in Mathematical Research》 CSCD 2016年第3期272-280,共9页
Let α be a nonzero endomorphism of a ring R, n be a positive integer and T_n(R, α) be the skew triangular matrix ring. We show that some properties related to nilpotent elements of R are inherited by T_n(R, α).... Let α be a nonzero endomorphism of a ring R, n be a positive integer and T_n(R, α) be the skew triangular matrix ring. We show that some properties related to nilpotent elements of R are inherited by T_n(R, α). Meanwhile, we determine the strongly prime radical, generalized prime radical and Behrens radical of the ring R[x; α]/(x^n), where R[x; α] is the skew polynomial ring. 展开更多
关键词 skew triangular matrix ring skew polynomial ring weak zip property strongly prime radical generalized prime radical
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