<正> Journal of Systems Science and Complexity (JSSC) is a quarterly journal distributed inter-nationally, seeking to publish high-quality papers on theories, methodologies and applicationsof systems science and complexity science. It focuses on systems th
本文研究一类具纯离散谱的非自伴算子,证明了该类算子在弱拓扑意义下可以特征展开的充分必要条件是该类算子是u-标的(u-scalar),又等价于该类算子拟仿射相似于自伴算子.并给出例子,说明其在弱拓扑意义下可以特征展开,但不属于经典的标型谱算子(Spectral operator of scalar type).