¼­¿ï´ë ÀÛ¿ë¼Ò ¼¼¹Ì³ª 2015 Sep 25: Reiji Tomatsu(Hokkaido University); Fullness of the core von Neumann algebra of a free product factors 2019 Nov 13: Reiji Tomatsu(Hokkaido University); Centrally free actions of amenable C*-tensor categories on von Neumann algebras