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1996 Nov 22: Hiroyuki Osaka(Ryukyu Univ.);  Introduction to the classification of purely infinite simple C*-algebras, I - Friendly approach to Kirchberg's classification Theorem

1996 Nov 22: Hiroyuki Osaka(Ryukyu Univ.);  Introduction to the classification of purely infinite simple C*-algebras, II - Friendly approach to Kirchberg's classification Theorem

1996 Nov 23: Hiroyuki Osaka(Ryukyu Univ.);  Introduction to the classification of purely infinite simple C*-algebras, III - Friendly approach to Kirchberg's classification Theorem

2001 Feb 21: Hiroyuki Osaka(Ritsumeikan Univ.);  Cancellation property for a pair of C*-algebras with finite index

2006 Jul 26: Hiroyuki Osaka(Ritsumeikan Univ.); Stable ranks of crossed products algebras

2012 Mar 9: Hiroyuki Osaka(Ritsumeikan Univ.); Inclusions of unital C*-algebras and the Rokhlin property 

2017 Apr 26: Hiroyuki Osaka(Ritsumeikan Univ.); THE ROKHLIN PROPERTY FOR ACTIONS OF DISCRETE GROUPS ON C*-ALGEBRAS AND RELATED TOPICS