在Banach空间中引入了∞阶Bessel序列与 Bessel算子的概念,研究了它们的一系列重要性质,并给出了一个序列成为∞阶Bessel序列的若......

推广了拟—Picard迭代序列的概念,证明了概率度量空间中某些新的收敛定理,这些定理推广了游兆永[1]中所有主要结果。......

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In this paper,we define a new generalized diference sequence space involving lacunary sequence.Then,we examine k-NUC pro......

Let X be a weakly Cauchy normed space in which the parallelogram law holds, C be a bounded closed convex subset of X wit......

讨论了三阶脉冲常微分方程解的振动性与渐近性, 给出了振动性与渐近性的充分条件....