Arpon Basu will present his General Exam "Sparsifying Sums of Positive Semidefinite Matrices"on April 30, 2026 at 12pm in CS 402. The members of his committee are as follows: Pravesh Kothari (adviser), Zeev Dvir, and Ran Raz Link to Abstract and Reading List: [ https://docs.google.com/document/d/1Ue2YLJakw_u57pi0Fqa5uW57-DNx_GTV0bgifJDU... | https://docs.google.com/document/d/1Ue2YLJakw_u57pi0Fqa5uW57-DNx_GTV0bgifJDU... ] Everyone is invited to attend the talk, and those faculty wishing to remain for the oral exam following are welcome to do so.