Seminars and Talks 10:00 - 11:00, October 9, 2019 (Wednesday) R440, Astronomy-Mathematics Building, NTU Multidimensional Persistence Diagrams via (co)Sheaf Theory--Grothendieck Operations 10:30 - 11:30, October 9, 2019 (Wednesday) 070116, Zhi Xi Building, NCCU Random walk in random environment (RWRE) III