A 9×9 Matrix Representation of Birman-Wenzl-Murakami Algebra and Berry Phase in Yang-Baxter System

We present a 9×9 S-matrix and E-matrix.A representation of specialized Birman-Wenzl-Murakami algebra is obtained.Starting from the given braid group representation S-matrix,we obtain the trigonometric solution of Yang-Baxter equation.A unitary matrix R(x,φ1,φ2)is generated via the Yang-Baxterization approach.Then we construct a Yang-Baxter Hamiltonian through the unitary matrix R(x,φ1,φ2).Berry phase of this Yang-Baxter system is investigated in detail.

SU(2)上的一些逼近结果

SU(2)是行列式为1的2×2酉矩阵群,本文首先给出了 SU(2)上连续可微函数的 Fourier 系数的阶的估计,并通过具体例子说明所得估计式的精确程度;另外,根据α的大小,分0<α<1两种情况讨论了 Lip(α,SU(2))中函数的 Fourier 级数的收敛性情况,并对 Lip(α,SU(2))(α>0)中的类函数的 Fourier 级数的收敛性作了讨论.