中文摘要：

提要证明了拟-＊-仿正规压缩算子是酉算子与完全非酉C．0-压缩算子的直和．并证明了若T是代数拟-＊-仿正规算子，则T有单值扩展性质（简记为SVEP）且是极．作为这些性质的应用，研究了此类算子的Weyl型定理．

英文摘要：

The authors show that the quasi-＊-paranormal contraction is the direct sum of a unitary and a C.0 completely non-unitary contraction. It is proved that if T is an algebraically quasi-,-paranormal operator, then （SVEP, for short） and T is a polaroid. As an theorem is studied. T has the single-valued extension property application of these properties, Weyl type theorem is studied.