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X-WR-CALDESC:Events for Claremont Center for the Mathematical Sciences
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DTSTART;TZID=America/Los_Angeles:20221102T161500
DTEND;TZID=America/Los_Angeles:20221102T173000
DTSTAMP:20260417T204827
CREATED:20220912T190050Z
LAST-MODIFIED:20221021T160045Z
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SUMMARY:Prof. Josiah Park
DESCRIPTION:Title: Packing lines\, minimizing energy\, and applications to communications \nSpeaker: Josiah Park\, Department of Mathematics\, Texas A&M University \nAbstract: Structured geometric point sets play important roles in coding theory\, mathematical biology\, computational chemistry\, wireless communications\, compressed sensing\, and ‘big data’ applications due to their often desirable statistical properties for measurement and transmission. Best packings of lines (known as Grassmannian packings) have desirable properties for Multiple-Input Multiple-Output (MIMO) wireless transmission and specific instances of these minimal coherence systems\, like equiangular tight frames have a number of interesting mathematical properties. I’ll describe in this talk some research which investigates numerical phenomena related to the point sets\, detailing several results on continuous ‘probabilistic’ energies. In addition I’ll talk about some experiments using parallelized computation and optimization methods like trust-region conjugate gradient to numerically generate good packings. Parts of the talk are represented by collaborations with D. Bilyk\, A. Glazyrin\, R. Matzke\, C. Saltijeral\, O. Vlasiuk\, and M. Zhong. \n\n\n\n\n\nJosiah Park\, Ph. D. is a Visiting Assistant Professor and NSF TRIPODS postdoctoral fellow at Texas A&M University working on the “Neural Network Approximation” project within the Center for Approximation and Mathematical Data Analytics. Josiah is currently a core member at UCLA for the IPAM program on computational microscopy. Previously\, he received his doctorate in mathematics at the Georgia Institute of Technology in 2020 under supervision of Professors Christopher Heil and Michael Lacey.
URL:https://colleges.claremont.edu/ccms/event/prof-josiah-park/
LOCATION:Humanities Auditorium\, Scripps College\, and Zoom\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.1035221214;-117.709766675
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221109T161500
DTEND;TZID=America/Los_Angeles:20221109T173000
DTSTAMP:20260417T204827
CREATED:20220830T231225Z
LAST-MODIFIED:20221025T193152Z
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SUMMARY:Prof. Edouard Oudet
DESCRIPTION:Title: Shape Optimization: Old and New \nSpeaker: Edouard Oudet\,  LJK\, Université Grenoble Alpes \nAbstract: We first introduce what is shape Optimization and the most classical problems of the field like the isoperimetric problem\, the study of minimal surfaces\, the characterization of irrigation networks\, etc. In a second step we focus on a more recent question related to Lebesgue-Santalo diagrams.  We show how tools from discrete geometry contributed to approximate in a very precise and efficient way these diagrams. \n\n\n\n\n\nEdouard Oudet is Professor of Applied Mathematics at University Grenoble Alpes and a member of Laboratoire Jean Kuntzmann  since 2010. His research interests include calculus of variation\, shape optimization\, optimal transportation and spectral theory. He has supervised or co-supervised 8 PhD theses and has written 50 articles in peer-reviewed international journals (ARMA\, Numerische Mathematik\, SIMA\, SICON\, JMIV\, . . . ). Since October 2022 he is a senior member of the IUF “Institut Universitaire de France”.
URL:https://colleges.claremont.edu/ccms/event/edouard-oudet/
LOCATION:Humanities Auditorium\, Scripps College\, and Zoom\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.1035221214;-117.709766675
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221116T161500
DTEND;TZID=America/Los_Angeles:20221116T173000
DTSTAMP:20260417T204827
CREATED:20220830T231344Z
LAST-MODIFIED:20221104T225945Z
UID:2808-1668615300-1668619800@colleges.claremont.edu
SUMMARY:Prof. Kate Petersen
DESCRIPTION:Title: Decision Problems in Low-Dimensional Topology \nSpeaker: Kate Petersen\, Department of Mathematics and Statistics\, CSU\, University of Minnesota Duluth \nAbstract: Due to Perelman’s proof of the Geometrization conjecture every closed 3-manifold can be decomposed into geometric pieces. These pieces exhibit one of Thurston’s eight model geometries.  This gives rise to the natural question: Given a 3-manifold how (quickly) can you determine its geometry?  We will discuss this question\, including some recent advances.  This is joint work with Neil Hoffman. \n\n\n\n\n\n\n\n\nMy research interests are in number theory and topology. After completing my undergraduate degree at Oberlin College\, I earned my PhD in 2005 at the University of Texas at Austin under the direction of Alan Reid.  My PhD work was in arithmetic groups\, which bridge number theory and topology.  Following my PhD I had a postdoc at Queen’s University in Kingston Ontario where I worked in number theory with Ram Murty.  I spent a semester visiting the Fields Institute before joining Florida State as a tenure-track Assistant Professor.  I earned tenure there in 2015.  In 2021 I joined the faculty of University of Minnesota Duluth where I am now the head of the Mathematics and Statistics Department.
URL:https://colleges.claremont.edu/ccms/event/kate-petersen/
LOCATION:Humanities Auditorium\, Scripps College\, and Zoom\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
GEO:34.1035221214;-117.709766675
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221130T161500
DTEND;TZID=America/Los_Angeles:20221130T173000
DTSTAMP:20260417T204827
CREATED:20220912T190237Z
LAST-MODIFIED:20220912T190237Z
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SUMMARY:Prof. Jack Wesley
DESCRIPTION:Speaker: Jack Wesley\, Department of Mathematics\, UC Davis
URL:https://colleges.claremont.edu/ccms/event/prof-jack-wesley/
LOCATION:Humanities Auditorium\, Scripps College\, and Zoom\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
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