Seminars and Talks 11:00 - 12:00, March 31, 2017 (Friday) R201, Astronomy-Mathematics Building, NTU Geometric Rigidity and the Low Energy Configurations of Dislocations 14:30 - 15:20, March 31, 2017 (Friday) R440, Astronomy-Mathematics Building, NTU Low-Rank Hankel Matrix Completion for Spectrally Sparse Signal Reconstruction with Super Resolution