利用线性代数中矩阵理论研究一种新内积——A-内积,给出了A-内积的一些基本性质,建立了这种内积上的Bessel不等式.
A-inner product,a new type inner product,is studied within matrix theory of linear algebra in this paper.Some basic properties of A-inner product are given,and Bessel inequality of A-inner product is established.