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April 2021

Stanislaw Szarek, Case Western Reserve University/Sorbonne Université

April 12 | 3:00 pm - 4:00 pm EDT
Zoom,

Zoom ID: 936 5420 1948 Password: the last four digits of the Zoom ID in reverse order

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Hussam Al Daas, STFC, Rutherford Appleton Laboratory, Two-level Nyström—Schur preconditioner for symmetric positive definite matrices

April 13 | 3:00 pm - 4:00 pm EDT
Zoom,

Randomized methods are becoming increasingly popular in numerical linear algebra. However, few attempts have been made to use them in developing preconditioners. Our interest lies in solving large-scale sparse symmetric positive definite linear systems of equations where the system matrix…

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Alessio Porretta, Università di Roma Tor Vergata, Long time behavior in mean field game systems

April 14 | 3:00 pm - 4:00 pm EDT
Zoom,

Mean field game PDE systems were introduced by J-M. Lasry and P.-L. Lions to describe Nash equilibria in multi-agents dynamic optimization. In the simplest model, those are forward-backward systems coupling Hamilton-Jacobi with Fokker-Planck equations. In this talk I will discuss…

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Dustin Kapraun, EPA, SIAM Mathematics in Industry Series

April 15 | 2:00 pm - 3:00 pm EDT
Zoom,

Dustin Kapraun attained degrees in mathematics (B.S., 1998), physics (M.S., 2002), and applied mathematics (Ph.D., 2014), all from North Carolina State University. After finishing the Ph.D., he completed two postdoctoral research appointments at the U.S. Environmental Protection Agency (EPA) National…

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Seyma Shabbir, Setting up your website

April 16 | 3:00 pm - 4:00 pm EDT
Zoom,

Diversity and Inclusion Brown Bag Lunch via Zoom

April 19 | 12:00 pm - 1:00 pm EDT
Zoom,

Vishesh Jain, Stanford University, On the real Davies’ conjecture

April 19 | 3:00 pm - 4:00 pm EDT
Zoom,

We show that every $n \times n$ real matrix $A$ is within distance $\delta \|A\|$ in the operator norm of an $n\times n$ real matrix $A'$ whose eigenvectors have condition number $\tilde{O}(\text{poly}(n)/\delta)$. In fact, we show that with high probability,…

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Barbara Kaltenbacher, University of Klagenfurt, Some Asymptotics of Equations in Nonlinear Acoustics

April 21 | 3:00 pm - 4:00 pm EDT
Zoom,

High intensity (focused) ultrasound HIFU is used in numerous medical and industrial applications ranging from lithotripsy and thermotherapy via ultrasound cleaning and welding to sonochemistry. The relatively high amplitudes arising in these applications necessitate modeling of sound propagation via nonlinear wave…

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Orsola Capovilla-Searle, Duke, Infinitely many Lagrangian Tori in Milnor fibers constructed via Lagrangian Fillings of Legendrian links

April 22 | 2:00 pm - 3:00 pm EDT
Zoom,

One approach to studying symplectic manifolds with contact boundary is to consider Lagrangian submanifolds with Legendrian boundary; in particular, one can study exact Lagrangian fillings of Legendrian links. There are still many open questions on the spaces of exact Lagrangian…

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Alan Edelman, Massachusetts Institute of Technology, 53 Matrix Factorizations and Random Matrix Theory

April 22 | 4:30 pm - 5:30 pm EDT
Zoom,

In this “something for everyone” talk, we will place the matrix decompositions that are so valuable in all fields of computation in a historical abstract context.  It is well known that the singular value decomposition was discussed as far back…

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Jo-Ann Cohen and Ilse Ipsen, Job Application Materials

April 23 | 3:00 pm - 4:00 pm EDT
Zoom,

Sarah Peluse, Princeton University/IAS

April 26 | 3:00 pm - 4:00 pm EDT
Zoom,

Jérôme Bolte, Université Toulouse 1 Capitole

April 28 | 3:00 pm - 4:00 pm EDT
Zoom,

Zoom meeting: Link

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Pratik Misra, NC State, Combinatorial problems on trees and graphical models

April 30 | 12:00 pm - 2:00 pm EDT
Zoom,

Chair: Seth Sullivant (smsulli2@ncsu.edu, contact for Zoom access)

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May 2021

Jonathan Hauenstein, University of Notre Dame

May 4 | 4:30 pm - 5:30 pm EDT
Zoom,

Zev Woodstock, NC State, Recovery of functions from nonlinear observations

May 17 | 9:00 am - 11:00 am EDT
Zoom,

Chair: Patrick L. Combettes (plc@math.ncsu.edu, contact for Zoom access)

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June 2021

Meng Zhang, NC State, Blood glucose forecasting: Data-driven model, physiological model, and hybrid approaches

June 25 | 2:00 pm - 4:00 pm EDT
Zoom,

Chair: Hien Tran  (tran@ncsu.edu) and Kevin Flores (kbflores@ncsu.edu) - contact for Zoom access

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