The authors obtain new characterizations of unconditional Cauchy series in terms of separation properties of subfamilies of p(N), and a generalization of the Orlicz-Pettis Theorem is also obtained. New results on the ...The authors obtain new characterizations of unconditional Cauchy series in terms of separation properties of subfamilies of p(N), and a generalization of the Orlicz-Pettis Theorem is also obtained. New results on the uniform convergence on matrices and a new version of the Hahn-Schur summation theorem are proved. For matrices whose rows define unconditional Cauchy series, a better sufficient condition for the basic Matrix Theorem of Antosik and Swartz, new necessary conditions and a new proof of that theorem are given.展开更多
文摘甲 实数域R上的无穷常数项级数的基本代数系统一 实数域R上的常数项级数设 u<sub>1</sub>,u<sub>2</sub>,…u<sub>n</sub>…∈Ru<sub>1</sub>,u<sub>2</sub>,…u<sub>n</sub>…（1）是实数域R上的无穷数列,u<sub>1</sub>+u<sub>2</sub>+…+u<sub>n</sub>+…=sum from n=1 to ∞ u<sub>n</sub> （2）（2）叫做实数域R上的无穷级数,u<sub>n</sub>叫做（2）的通项.
文摘The authors obtain new characterizations of unconditional Cauchy series in terms of separation properties of subfamilies of p(N), and a generalization of the Orlicz-Pettis Theorem is also obtained. New results on the uniform convergence on matrices and a new version of the Hahn-Schur summation theorem are proved. For matrices whose rows define unconditional Cauchy series, a better sufficient condition for the basic Matrix Theorem of Antosik and Swartz, new necessary conditions and a new proof of that theorem are given.
