lei suan zi de yi xie xing zhi
Ming Fan · Fudan xuebao. Ziran Kexue ban · 1987
For class operator, certain properties including relation between boundedness and analycity of local resolvent, are discussed. Some sufficient conditions are given to ensure that a (?) class operator is not similar to normal operator. It is also proved that ■ class operator with compact imaginary part must be a normal operator.