Seminars and Talks 14:00 - 15:00, June 25, 2019 (Tuesday) R201, Astronomy-Mathematics Building, NTU Categorical Entropy of Autoequivalences on Calabi-Yau Manifolds 15:30 - 16:30, June 25, 2019 (Tuesday) R201, Astronomy-Mathematics Building, NTU A Liouville Type Theorem for Harmonic 1-forms