Power Nev - 雷米克斯

The hyperbolic algebra A_h, studied recently by Katavolos and Power, is the weak star closed operator algebra on L^2(R) generated by H^\infty(R), as multiplication operators, and by the dilation operators V_t, t \geq 0, given by V_t f(x) = e^{t/2} f(e^t x). We show that A_h is a reflexive operator algebra and that the four dimensional manifold Lat A_h (with the natural topology) is the reflexive hull of a natural two dimensional subspace.

水利工程是一个利国利民的基本设施，其建设施工中存在着很大的系统化和复杂化，安全施工成为水利工程顺利建设的基础，但在水利工程安全管理工作过程中，受许多因素的影响，给水利工程安全管理工作带来了一定的困难，而且给工程项目留下了安全隐患。