Symmetrisable operators: Part II Operators in a Hilbert Space
J. P. O. Silberstein · Journal of the Australian Mathematical Society · 1964
In the first paper of this series [4] I gave a brief summary of the properties of symmetrisable operators in Hilbert Space. A detailed discussion of these properties will be given now, but the properties of operators symmetrisable by bounded operators will be dealt with further in Part III.