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 Decomposition of Dirichlet forms associated to unbounded Dirichlet operators Bull. Korean Math. Soc. 2009 Vol. 46, No. 2, 347-358 https://doi.org/10.4134/BKMS.2009.46.2.347Printed March 1, 2009 Chul Ki Ko Yonsei University Abstract : In [8], the author decomposed the Dirichlet form associated to a bounded generator $G$ of a weakly$^*$-continuous, completely positive, KMS-symmetric Markovian semigroup on a von Neumann algebra $\mathcal M$. The aim of this paper is to extend $G$ to the unbounded generator using the bimodule structure and derivations. Keywords : KMS-symmetric Markovian semigroups, Dirichlet forms, Dirichlet operators, derivations MSC numbers : 46L55, 46L57, 47D07 Downloads: Full-text PDF