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On the relation of closed forms and Trotter's product formula

Mate Matolcsi
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Abstract

The aim of this paper is to give a characterization in Hilbert spaces of the generators of $C_0$-semigroups associated with closed, sectorial forms in terms of the convergence of a generalized Trotter's product formula. In the course of the proof of the main result we also present a similarity result which can be of independent interest: for any unbounded generator $A$ of a $C_0$-semigroup $e^{tA}$ it is possible to introduce an equivalent scalar product on the space, such that $e^{tA}$ becomes non-quasi-contractive with respect to the new scalar product.

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Mate Matolcsi. 2006-11-30. On the relation of closed forms and Trotter's product formula. https://arxiv.org/abs/math/0611933

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