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On order isomorphisms intertwining semigroups for Dirichlet forms

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arxiv 2204.02975 v1 pith:O6TFFAB5 submitted 2022-04-06 math.FA math.PR

classification math.FAmath.PR
keywords intertwiningordersemigroupsdirichletformscompositioneveryisomorphism
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abstract

This paper is devoted to characterizing the so-called order isomorphisms intertwining the $L^2$-semigroups of two Dirichlet forms. We first show that every unitary order isomorphism intertwining semigroups is the composition of $h$-transformation and quasi-homeomorphism. In addition, under the absolute continuity condition on Dirichlet forms, every (not necessarily unitary) order isomorphism intertwining semigroups is the composition of $h$-transformation, quasi-homeomorphism, and multiplication by a certain step function.

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