# Seminar at SMU Delhi

October 23, 2019 (Wednesday) , 3:30 PM at Webinar
Speaker: Keshab Bakshi, CMI, Chennai
Title: A quadruple of $II_1$ factors.
Abstract of Talk
Given a quadruple (N,P,Q,M) of $II_1$ factors with finite Jones index a new notion of angle between P and Q were introduced in [An Angle between intermediate subfactors and its rigidity, Trans. Amer. Math. Soc. 371(8) (2019)] to understand the relative position between the intermediate subfactors. We determine the possible values of this angle when $N\subset P$ and $N\subset Q$ both are so-called 'regular' subfactors. In particular, we obtain a generalization of a result of T. Sano and Y. Watatani. This talk is based on a joint work with Prof. Ved Prakash Gupta.