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April 3Stats and Prob SeminarTitle: Statistical methods used for clinical researchHiya Banerjee – Director of Biostatistics at Eli LillyAbstract
Title: Statistical methods used for clinical research
Hiya Banerjee – Director of Biostatistics at Eli Lilly Abstract: In the technical presentation, I will showcase an innovative statistical method utilized to address a clinical question in the context of drug marketing. I will provide a comprehensive overview of how statisticians are involved in approaching and solving the problem, shedding light on the formulation of hypotheses and our collective endeavors to reach resolutions. Besides that I will talk about how our daily responsibilities influence the trajectory of drug development. Furthermore, I will touch upon the essential skills and behaviors that aspiring students can cultivate to successfully embark on a career in the industry. The conversation will be informal, allowing for ample time for interactions and questions, providing insights into potential careers. Location: Gibson 126 Time: 4:00 PM Location: Gibson 126 Time: 4:00 PM |
April 4ColloquiumTitle: TBAAnton Dochtermann - Texas State University (Host: Dr. Ha)Abstract
Title: TBA
Anton Dochtermann - Texas State University (Host: Dr. Ha) Abstract: TBA Location: Gibson Hall 126A Time: 3:30 Location: Gibson Hall 126A Time: 3:30 |
April 5/6Math For ALL______Algebraic Geometry SeminarTitle: Poisson geometry of cluster algebras and their quantizationBach NguyenAbstract
Title: Poisson geometry of cluster algebras and their quantization
Bach Nguyen Abstract: The relationship between Poisson geometry and cluster algebra was first studied by M. Gekhtman, M. Shapiro, and A. Vainshtein. Following their work, we study the global geometry picture of the affine Poisson varieties associated to a cluster algebra and its quantization, root of unity quantum cluster algebra. In particular, we prove that the spectrum of the upper cluster algebra, endowed with the GSV Poisson structure, has a Zariski open orbit of symplectic leaves and give an explicit description of it. Our result provides a generalization of the Richardson divisor of Schubert cells in flag varieties. Further, we describe the fully Azumaya loci of the root of unity upper quantum cluster algebras, using the theory of Poisson orders. This classifies their irreducible representations of maximal dimension. This is a joint work with Greg Muller, Kurt Trampel and Milen Yakimov. Location: Gibson Hall 126A Time: 3:00 Location: Gibson Hall 126A Time: 3:00 ______Applied and Computational MathematicsTitle:Grady Wright - Boise StateAbstract
Title:
Grady Wright - Boise State Abstract: Location: Gibson 126 Time: 3:30 PM Location: Gibson 126 Time: 3:30 PM |
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April 10Stats and Prob SeminarTitle: The Proximal Distance Principle for Constrained EstimationAlfonso Landeros – University of California, RiversideAbstract
Title: The Proximal Distance Principle for Constrained Estimation
Alfonso Landeros – University of California, Riverside Abstract: Statistical methods often involve solving an optimization problem, such as in maximum likelihood estimation and regression. The addition of constraints, either to enforce a hard requirement in estimation or to regularize solutions, complicates matters. Fortunately, the rich theory of convex optimization provides ample tools for devising novel methods. In this talk, I present applications of distance-to-set penalties to statistical learning problems. Specifically, I will focus on proximal distance algorithms, based on the MM principle, tailored to various applications such as regression and discriminant analysis. Special emphasis is given to sparsity set constraints as a compromise between exhaustive combinatorial searches and lasso penalization methods that induce shrinkage. Location: Gibson 126 Time: 4:00 PM Location: Gibson 126 Time: 4:00 PM |
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April 12Geometry and TopologyTitle: Knot invariants and hyperbolic flowsSolly Coles - Northwestern UniversityAbstract
Title: Knot invariants and hyperbolic flows
Solly Coles - Northwestern University Abstract: In this talk, we will discuss the average value taken by a knot invariant on the periodic orbits of a hyperbolic flow on the 3-sphere. The first relevant result comes from the work of Contreras, who studied the average linking number between periodic orbits. Contreras found precise asymptotic growth rates for this number, as the period tends to infinity. In the proof, the Gauss linking integral is used to translate the problem into the language of ergodic theory. In recent work, we instead consider the average value of a Vassiliev invariant on periodic orbits. Here, the configuration space integrals of Bott and Taubes take the place of the Gauss linking integral in Contreras' work. Location: Dinwiddie DW-103 (special time and day) Time: 2:00 Location: Dinwiddie DW-103 (special time and day)Time: 2:00 |
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April 18ColloquiumTitle: TBAJiahong Wu - Notre Dame (Host: Zhao)Abstract
Title: TBA
Jiahong Wu - Notre Dame (Host: Zhao) Abstract: TBA Location: Gibson Hall 126A Time: 3:30 Location: Gibson Hall 126A Time: 3:30 |
April 19Applied and Computational MathematicsTitle: TBACole Graham - Brown UniversityAbstract
Title: TBA
Cole Graham - Brown University Abstract: TBA Location: Gibson Hall 126 Time: 3:00 Location: Gibson Hall 126 Time: 3:00 |
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April 22Geometry and TopologyTitle: The wrappingness and trunkenness of volume-preserving flowsPeter Lambert-Cole - University of GeorgiaAbstract
Title: The wrappingness and trunkenness of volume-preserving flows
Peter Lambert-Cole - University of Georgia Abstract: Link invariants of long pieces of orbits of a volume-preserving flow can be used to define diffeomorphism invariants of the flow. The wrapping number of a link in the solid torus and the trunk of a link can be generalized and define invariants of links with respect to a fibration on a 3-manifold. Extending work of Dehornoy and Rechtman, we apply this to define diffeomorphism invariants wrappingness and trunkenness of volume-preserving flows on 3-manifolds and interpret these invariants as obstructions to the existence of a global surface of section for the flow. We construct flows and show that wrappingness and trunkenness are not functions of the helicity. Location: Gibson Hall 308 Time: 2:00 Location: Gibson Hall 308 Time: 2:00 |
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