Speaker: Radu Balan (UMD) -

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Speaker: Samuel Punshon-Smith (University of Maryland) -

Abstract: http://www.terpconnect.umd.edu/~lvrmr/2017-2018-S/Classes/RIT.shtml

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Speaker: Paolo Piccione (Universidade de São Paulo) - https://www.ime.usp.br/~piccione/Abstract: I will consider the total Q-curvature functional in the conformal class of a compact Riemannian manifold of dimension n greater than or equal to 5. This is the quadratic functional associated to the Paneitz operator, a fourth order differential operator given by the bi-Laplacian plus lower order terms. I will present two results of existence of multiple critical points of the total Q-curvature, that corresponds to metrics with constant Q-curvature in a fixed conformal class. This is a joint work with Renato Bettiol (UPenn) and Yannick Sire (Johns Hopkins Univ.).

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Speaker: Brad Lackey (University of Maryland) - http://www.umiacs.umd.edu/~bclackey

Abstract: Synchronous correlations are a class of nonlocal games that behave like functions between finite sets. We examine categories whose morphisms are games with synchronous classical, quantum, or general nonsignaling correlations, characterizing when morphisms in these categories are monic, epic, sections, or retractions.

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Speaker: Caroline Terry (UMD) -

Abstract: We continue our reading of ``Regularity Lemmas for Distal Structures."

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Speaker: Kasun Fernando (UMD) -

Abstract: ASIPs tell us that trajectories of dynamical systems are almost like Brownian motion trajectories with an error small compared to the size of the trajectories. In this talk we present how these extremely useful results can be obtained via the Nagaev Guivarc'h method.

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Speaker: Vince Guingona (Towson University) -

Abstract: For an algebraically trivial Fraisse class K, we define K-configurations and K-rank and study their properties. The notion of K-rank generalizes the notion of dp-rank in distal theories.

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Speaker: Lei Li (Department of Mathematics, Duke University) - https://services.math.duke.edu/~leili/

Abstract: We study incompressible, irrotational flows of an inviscid fluid with free surface in planar domains conformally equivalent to a disk. I will talk about some properties of the equations under the conformal mapping formulation, which is the geodesic of a Riemannian structure. In particular, linearization of the equations shows a nonlocal hyperbolic structure, which ensures linear stability. I will then describe a filtered-Fourier pseudospectral method for numerical simulation. The convergence of the numerical schemes is then proved making use of the hyperbolic structure.

This is a joint work with Jian-Guo Liu and Robert Pego.

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Speaker: Priyankur Chaudhuri (UMD) -

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Speaker: Slawomir Dinew (Krakow) -

Abstract: We shall discuss geometric and measure theoretic properties of mimimum sets of strictly plurisubharmonic functions. Relations to various branches of complex analysis will be investigated.

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Speaker: Prof. Doron Levy (CSCAMM and Department of Mathematics, University of Maryland) - http://www.math.umd.edu/~dlevy/

Abstract: Tyrosine kinase inhibitors such as imatinib (IM), have significantly improved treatment of chronic myelogenous leukemia (CML). Yet, most patients are not cured for undetermined reasons. In this talk we will describe our recent work on modeling the autologous immune response to CML. We will also discuss our previous results on cancer vaccines, drug resistance, and the dynamics of hematopoietic stem cells.

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Speaker: Weiqiang Wang (University of Virginia)

Abstract: Schur algebra and Schur duality are usually referred to type A. In this talk we explain a generalization (in the quantized setting) which makes sense for any finite type such as type G_2 or E_8. We explain both algebraic and geometric constructions of the q-Schur algebras and q-Schur dualities; We show the q-Schur algebras have canonical bases with positivity and are closely related to the BGG category O. This is joint work with Li LUO (Shanghai), and it is related to earlier work with Huanchen Bao and others.

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Speaker: Weiqiang Wang (University of Virginia) Abstract: We will describe a certain stability for the centers of the group algebras of the symmetric groups S_n for varying n, and its geometric counterpart. (To experts: this is not about Schubert calculus). We shall then explain the generalization of this stability phenomenon for wreath products and for Hecke algebras. This talk should be accessible to graduate students.

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Speaker: FFT 2018 () - http://www.norbertwiener.umd.edu/FFT/2018/schedule.html

Abstract: See the list of speakers and abstracts at http://www.norbertwiener.umd.edu/FFT/2018/schedule.html

Main lectures:

1) Yannis Kevrekidis (JHU) 4:15 - 5

2) Peggy Kidwell (Smithsonian) 6:40 - 7:30

3) William Johnson (TAMU), 3:45 - 4:30

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Speaker: Ankit Barik - Johns Hopkins Department of Earth & Planetary Sciences

Abstract: The spherical Couette system consists of two concentric spheres rotating differentially about a common axis. The space in between the spheres is filled with a conducting fluid. It is a relatively simple system without any thermal or density stratification and and has potential applications to planetary and stellar interiors. In addition, it is also an extremely interesting fluid dynamical system displaying a host of complex instabilities and other fluid dynamics phenomena. In the first part of the talk, I shall introduce the system and explore the generic regimes of different instabilities. This will be followed by some results using hydrodynamic simulations of this system with two pseudo-spectral codes MagIC and XSHELLS while comparing them with experimental data. Focus will be on the origin of special wave instabilities called 'inertial modes' and the transition to turbulence. In the next part, I will present magnetohydrodynamic simulations exploring the effect of an external magnetic field on inertial modes. In the final part of the talk, I will present simulations of self-consistent dynamo action in this system and the parameter dependence of the same.

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Speaker: Kostya Medynets (Naval Academy) - https://www.usna.edu/Users/math/medynets/index.php

Abstract: In the talk, we will classify the ergodic invariant random subgroups (IRS) of simple AF full groups. AF full groups arise as the transformation groups of Bratteli diagrams that preserve the cofinality of infinite paths in the diagram. AF full groups are complete (algebraic) invariants for the isomorphism of Bratteli diagrams. Given a simple AF full group G, we will prove that every ergodic IRS of G arises as the stabilizer distribution of a diagonal action on X^n for some n, where X is the path-space of the Bratteli diagram associated to G. This is joint work with Artem Dudko.

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Speaker: Ian Teixeira -Abstract: More on gerbes and twists. See Hitchin's article "What is a gerbe?" athttp://www.ams.org/notices/200302/what-is.pdf for more details.

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Speaker: FFT 2018 - http://www.norbertwiener.umd.edu/FFT/2018/schedule.htmlAbstract: See the list of speakers and abstracts at http://www.norbertwiener.umd.edu/FFT/2018/schedule.htmlMain lectures:1) Yannis Kevrekidis (JHU) 4:15 - 52) Peggy Kidwell (Smithsonian) 6:40 - 7:303) William Johnson (TAMU), 3:45 - 4:30

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Speaker: Benjamin Dodson

Organizer: Matei Machedon

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