Relatively Form-Bounded Perturbations in Krein Spaces
In Chapter 1 we considered perturbations A0 +V of a closed linear operator A0 by a linear operator V for which A0 +V is defined as an operator sum. In this chapter we consider operators A0 and V for which the sum is defined only by means of quadratic forms. We will extend the main results from Chapter 1 to this more general case.
KeywordsHilbert Space Quadratic Form Sectorial Form Symmetric Operator Sectorial Operator
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