Seminars and Talks 15:00 - 16:00, February 19, 2021 (Friday) broadcast in Room 515, Cosmology Bldg., NTU, Online seminar Sasaki-Einstein and Kähler-Einstein Metric on 5-manifolds and Weighted Hypersurfaces 16:15 - 17:15, February 19, 2021 (Friday) broadcast in Room 515, Cosmology Bldg., NTU, Online seminar An Application of a Bogomolov-Gieseker Type Inequality to Counting Invariants Conferences, Workshops and Special Events February 19, 2021 2021 NCTS Young Dynamics Day