Research for Hilbert C^*-bimodules and associated C^*-algebras

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1. We define crossed product C*-bimodule by finite group, and obtain some fundamental results. More-over, we study A-D duality in operator algebra theory by this method. These results are published in "Crossed products of Hilbert *C-bimodules by countable discrete groups".2. We define crossed product C*-bimodule by bundles over finite groups, and prove the associativity law for multiple crossed products. These results are published in "Crossed products of Hilbert C*-bimodule by bundles.3. We investigate ideal structures of C*-algebras associated with finitely generated Hilbert C*-bimodules over unital C*-algebras A.We define the condition (I) and show the simplicity under this condition. Moreover we define the condition (11) and under this condition we present the correspondence the ideals in the bimodules algebras and the ideals of A.We present some examples satisfying these conditions. These results are published in "Ideal structure and simplicity of the C*-algebra generated b9Hilbert bimodules".4. We define coaction on finitely generated Hilbert C*-bimodule by finite groups. We show that resulting crossed product is made into a finitely generated Hilbert C*-bimodule. This results is published in "Coaction crossed products of Hubert C*-bimodule by finite groups".5. We define Hilbert C*-bimodules for countable continuous graphs whose components are 1-dimensional torus, and study the structure of associated C*-algebras. We obtain simplicity and ideal structure of these algebras. These results are published in "Hilbert C*-bimodules and countably infinite continuous graphs"6. We are studying singular dynamical system using Hilbert C*-bimodule method. We construct natural basis for the bimodule associated with the tent map. We are plan to. define conjugacy invariant for the above dynamical systems using our method.