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Texas A&M University

Events for 10/07/2019 from all calendars

Working Seminar in Groups, Dynamics, and Operator Algebras

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Time: 2:00PM - 3:00PM

Location: BLOC 628

Speaker: Jianchao Wu, Texas A&M University

Title: The UCT

Geometry Seminar

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Time: 3:00PM - 4:00PM

Location: BLOC 628

Speaker: Matthew Ballard, University of South Carolina

Title: Can the derived category detect rationality?

Abstract: Rationality questions and the structure of derived categories of coherent sheaves have been shown to be intimately tied together over the past 30 years - both via evidence and tantalizing conjectures. Perhaps the most basic question one can ask is: are there natural conditions on D(X) which would imply the rationality of X? One of the simplest structural conditions on D(X) is that it can be broken into pieces that are derived categories of (smooth) points. In joint work with Duncan, Lamarche, and McFaddin, we show that this is insufficient to guarantee the existence of a k-point in general much less rationality. However if one assumes all the points are just Spec k then we verify this guarantees rationality for toric varieties.


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Time: 6:00PM - 7:00PM

Location: BLOC 220

Speaker: Wei Trinh, Department of Electrical Engineering, Texas A&M University

Title: How Math Can Tell You Why Your Lights Won’t Turn On

Abstract: Power is fundamental to the operation of our society. So, what happens when a blackout occurs? This talk begins with the idea of power systems, and how mathematics is used to analyze and understand power. We then dive into the specifics of modal analysis; a technique used to analyze and understand the behavior of certain aspects of our power system after events like natural disasters, and what we can do with the information. About the Speaker: Wei Trinh received B.S. in Physics and a B.S. in Mathematics from the University of Maryland, Baltimore County in 2016. He is currently a Ph.D. student in Electrical Engineering at Texas A&M University, investigating the applications of modal analysis techniques for system characterization and analysis under Dr. Overbye.