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均匀网络上SIR模型三种不同逼近方法比较
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作者 王治萍 《安阳师范学院学报》 2018年第5期49-51,共3页
借助SIR传染病模型比较了均匀网络上三种逼近方法(邻居数服从Poission分布、多项式分布以及基于平均场思想的逼近方法)的精度,并分析讨论了三种逼近方法对模型阈值的影响。
关键词 对逼近 下代矩阵 基本再生数
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The Algebraic Properties of a Type of Infinite Lower Triangular Matrices Related to Derivatives
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作者 赵熙强 王天明 《Journal of Mathematical Research and Exposition》 CSCD 北大核心 2002年第4期549-554,共6页
In this paper, Jabotinsky matrices in [4, 5] are modified and a type of infinite lower triangular matrices T(f) is discussed. Some algebraic properties of T(f) are obtained and proved. Additionally, some inverse pairs... In this paper, Jabotinsky matrices in [4, 5] are modified and a type of infinite lower triangular matrices T(f) is discussed. Some algebraic properties of T(f) are obtained and proved. Additionally, some inverse pairs and combinatorial identities associated with derivatives are obtained. 展开更多
关键词 Jabotinsky matrix combinatorial identity inverse pair derivative.
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