On Wick product of generalized operators

Fundamental properties of Wick product of generalized operators are investigated. The annihilation and creation algebras are characterized from various points of view. Wick ordering widely used in quantum physics is interpreted as the Wick product of generalized operators.     

电磁场位相算符的研究

分析了电磁场真空态性质,指出在量子电场中讨论真空电磁场的位相是无意义的.对任一量子态｜Ψ＞,我们引入投影算符∧＝｜0＞＜0｜后,电磁场算符是么正的.     

Optimal procedure for fitting the magnetic susceptibility vs J couplings

To provide efficiency in calculating the energy-levels of paramagnetic spin clusters with high nuclear -ity, a fitting program of irreducible tensor operator is developed for the calculation of / couplings. An optimal data-access process is given, which greatly enhances the computational aspects of such modeling. Upon the program's application, the coupling constants of the moderate-sized clusters are fitted automatically by the least-squares calculations in PCs.     

局部紧Abel群情况下的算子调和分析——F.Riesz和M.Riesz定理

设G是局部紧Abel群,B是G上的无Order弃次Banach代数,(?)_B~1为B上的右平移可积算子全体。在某些条件下,(1)在(?)中关于算子的F.Riesz和M.Riesz第一定理成立。(2)在(?)中解析算子的F.Riesz和M.Riesz第二定理成立。     

算子代数发展概述

本文概述了算子代数发展的主要线索及关键点     

微分与积分缓冲容量的计算通式及程序

从电荷平衡条件出发,推导出微分缓冲容量与积分缓冲容量的计算通式,枢据通式用BASIC语言编制出计算程序,在APPLEⅡ型微机上运行通过。同时,本文还对最简单的缓冲体系的微分缓冲容量作些讨论。     

有界齐性算子空间及其应用

本文证明了赋范线性空间中有界齐性算子与在零点连续的齐性算子等价，对两个赋范线性空间X与Y之间的有界齐性算子全体H（X，Y），按引入的范数及线性运算，构成赋范线性空间；证明了有界齐性算子空间H（X，Y）为Banach空间当且仅当空间Y是完备的，最后，我们给出有界齐性算子空间在算子广义逆问题上的应用。     

Adaptive immune-genetic algorithm for global optimization to multivariable function

An adaptive immune-genetic algorithm(AIGA)is proposed to avoid premature convergence and guarantee the diversity of the population.Rapid immune response (secondary response),adaptive mutation and density operators in the AIGA are emphatically designed to improve the searching ability,greatly increase the converging speed,and decrease locating the local maxima due to the premature convergence.The simulation results obtained from the global optimization to four multivariable and multi-extreme functions show that AIGA converges rapidly,guarantees the diversity,stability and good searching ability.     

随机收缩偶与随机算子方程组的解

本文引入随机收缩偶,建立随机算子方程组公共随机解的存在性定理,使随机收缩理论与映像组公共随机不动点定理在Banach空间得以统一,并推广了随机收缩理论中的一些重要结果。     

径向正解拐点的存在唯一性问题

设Ω是Rn中的环型区域,n>m>1.m-Laplace方程的边值问题是Δmu f(u)=0,x∈Ω,u|Ω=0,讨论其径向正解的拐点,给出了一个拐点的存在唯一性结论.