<正>In this article,a threshold dividend strategy is used for classical risk model. Under this dividend strategy,certain probability of ruin,which occurs in cas
<正>Noncommutative Poisson algebras are the algebras having both an associative algebra structure and a Lie algebra structure together with the Leibniz law.In t
<正>The authors study recursive structures with'finite memory'in Euclidean matric space and the multifractal decomposition of the corresponding fractals