On the logarithm of closed linear operators
On the logarithm of closed linear operators
For a non-negative operator A in a Banach space X, Nollau [3] gave a definition of its logarithm log A. In this note, we present an- other definition of log A. Formally our definition is based on theIt is important here that log(//A) -(resp.log A(/-t-A)-9 is to be defined as …