Speaker: Diane Guignard (Department of Mathematics - Texas A&M University) - http://www.math.tamu.edu/~dguignard/

Abstract: We study the elastic behaviour of prestrained plates, phenomenon observed for instance in plastic deformation, natural growth of soft tissues or manufactured polymer gels. When actuated, the prestrained plates reduce their internal stresses by undergoing (possibly large) deformations. Their mathematical modeling consist of a geometric nonlinear fourth order problem with a nonlinear riemanian metric constraint. A discrete gradient flow is proposed to decrease the system energy and is coupled with finite element approximations of the plate deformations based on discontinuous Galerkin finite elements.

In this talk, we give a general description of the model, introduce the numerical scheme and discuss some of its properties, such as the Gamma-convergence of the finite element approximations. We illustrate the performance of the proposed methodology through several numerical experiments involving different prestrain metrics.

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Speaker: Patrick Daniels (UMCP) -

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Speaker: Kyle Liss (University of Maryland) -

Abstract: http://www.terpconnect.umd.edu/~lvrmr/2018-2019-S/Classes/RIT.shtml

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Speaker: Francisco Arana Herrera (Stanford University) -

Abstract: Let X be a closed, connected, hyperbolic surface of genus 2. Is it more likely for a simple closed geodesic on X to be separating or non-separating? How much more likely? In her thesis, Mirzakhani gave very precise answers to these questions. One can ask analogous questions for square-tiled surfaces of genus 2 with one horizontal cylinder. Is it more likely for such a square-tiled surface to have separating or non-separating horizontal core curve? How much more likely? Recently, Delecroix, Goujard, Zograf, and Zorich gave very precise answers to these questions. Surprisingly enough, their answers were exactly the same as the ones in Mirzakhaniâ€™s work. In this talk we explore the connections between these counting problems, showing they are related by more than just an accidental coincidence.

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Speaker: Omar Lakkis (Department of Mathematics - University of Sussex) - https://www.maths.sussex.ac.uk/Staff/OL/

Abstract: TBA

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Speaker: Bharathwaj Palvannan (UPenn) - https://www.math.upenn.edu/~pbharath/

Abstract: Classical Iwasawa theory studies a relationship, called the Iwasawa main conjecture, between a $p$-adic $L$-function and a Selmer group. This relationship involves codimension one cycles of an Iwasawa algebra. This talk will discuss results on the topic of higher codimension Iwasawa theory. We will consider the restriction to an imaginary quadratic field of an elliptic curve defined over the rational numbers with good supersingular reduction at an odd prime. We shall also consider the tensor product of Hida families. This is joint work with Antonio Lei.

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Speaker: Victor Galitski - University of Maryland | Department of Physics

Abstract: TBA

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Speaker: Steven Jin

Abstract: This talk will be based on the paper by So Okada, Stability manifold of P^1,

J. Algebraic Geom. 15 (2006), no. 3, 487-505, arXiv:math/0411220.

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Speaker: Pro. Debasis Desgupta (Indian Statistical Institute) -

Abstract: The close connection between global temperature variation and atmospheric carbon dioxide concentration has been central to the issue of climate change. The lag/lead between sets of longitudinal data on the two variables has implications for the causality of that connection. We consider this problem as one of curve registration. Most of the available solutions for this problem have been designed for the growth data application, where the number of observations is small and the number of replicates is large. We argue that a different emphasis is needed for the paleoclimatic application. We provide a new method, which is able to pool local information without smoothing and to match sharp landmarks without manual identification. We prove the consistency of the proposed method under fairly general conditions. Simulation results show superiority of the performance of the proposed method over two existing methods. Use of the proposed method to Antarctic ice core data leads to some interesting conclusions.

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Speaker: Weikun Wang (UMD) -

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Speaker: S. Gilles (UMD) -

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