Bulletin of the
Korean Mathematical Society
BKMS

ISSN(Print) 1015-8634 ISSN(Online) 2234-3016

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Bull. Korean Math. Soc. 2009; 46(2): 347-358

Printed March 1, 2009

https://doi.org/10.4134/BKMS.2009.46.2.347

Copyright © The Korean Mathematical Society.

Decomposition of Dirichlet forms associated to unbounded Dirichlet operators

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