MSCS Seminar Calendar

Thursday July 24, 2014
pdf * Algebraic Geometry Seminar
Generic state polytopes, stability and complexity of computation
Donghoon David Hyeon (POSTECH)
3:00 PM in SEO 427
We study how state polytopes (from GIT, these tell you whether a given point is semistable or not) change according to the choice of the maximal torus. We define the notion of generic state polytope generalizing the notion of generic initial ideals, and prove that any point is stable with respect to a general maximal torus. This fundamental observation allows one to precisely formulate a conjecture of D. Bayer and I. Morrison about the geometry of the ideal and the computational complexity of its Groebner bases.
Monday July 28, 2014
pdf * Combinatorics Seminar
c-Sum Flows in Graphs
Professor Saieed Akbari (Sharif University of Technology & IPM)
3:00 PM in SEO 427
Let G be a graph. For a real number c, a c-sum flow of G is an assignment of non-zero real numbers to the edges of G such that the sum of values of all edges incident with each vertex is c. Let k be a natural number. A c-sum k-flow is a c-sum flow whose absolute values from the set {1,...,k}. In this talk, we present known results on c-sum k-flows of graphs and propose several conjectures.
The four-color theorem states that any map in a plane can be colored using four-colors in such a way that regions sharing a common boundary (other than a single point) do not share the same color. Nowhere-zero flows in directed graphs are important because they have nice relations with four color theorem. Here, we provide a bridge between nowhere-zero flows in directed graphs and 0-sum flows in undirected graphs.
Friday August 29, 2014
pdf * Departmental Colloquium
TBA
Douglas Arnold (University of Minnesota)
3:00 PM in SEO 636
Wednesday September 3, 2014
pdf * Statistics Seminar
TBA
Keli Liu (Harvard/Stanford)
4:00 PM in SEO 636
Monday September 15, 2014
pdf * Applied Mathematics Seminar
TBA
David Ambrose (Drexel University)
4:00 PM in SEO 636
Monday September 22, 2014
pdf * Applied Mathematics Seminar
Soft metrics for decision analysis under uncertainty
Michelle Quirk (National Intelligence University and National Geospatial-Intelligence Agency)
4:00 PM in SEO 636
Modern decision making challenges the human capacity to reason in an environment of uncertainty, imprecision, and incompleteness of information. Probability measures are not well-suited when the evidence is scarce and unreliable. Built from fuzzy sets, possibility metrics overcomes some of the restrictions and insufficiencies of probabilities, in a complementary, yet not competitive manner. We show the theoretical foundation and the interdisciplinary approach required to devise soft metrics as attributes of decision criteria that cannot be expressed numerically. This talk concludes with an example of soft metrics used in real-world ranking exercises.
Friday September 26, 2014
pdf * Departmental Colloquium
TBA
Rodrigo Banuelos (Purdue University)
3:00 PM in SEO 636
Monday September 29, 2014
pdf * Applied Mathematics Seminar
TBA
Thomas Chen (University of Texas at Austin)
4:00 PM in SEO 636
Monday October 6, 2014
pdf * Applied Mathematics Seminar
TBA
Phoolan Prasad (Indian Institute of Science, Bangalore)
4:00 PM in SEO 636
Wednesday October 8, 2014
pdf * Algebraic Geometry Seminar
TBA
Jarek Bucynzki (Institute of Mathematics, Polish Academy of Sciences)
4:00 PM in SEO 427
Monday October 13, 2014
pdf * Applied Mathematics Seminar
TBA
Florian Mehats (University of Rennes)
4:00 PM in SEO 636
Wednesday October 15, 2014
pdf * Statistics Seminar
TBA
Mengyu Xu (University of Chicago)
4:00 PM in SEO 636
Friday October 17, 2014
pdf * Departmental Colloquium
TBA
Wilfrid Gangbo (Georgia Tech)
3:00 PM in SEO 636
Monday October 20, 2014
pdf * Applied Mathematics Seminar
TBA
Kasso Okoudjou (University of Maryland)
4:00 PM in SEO 636
Monday November 10, 2014
pdf * Applied Mathematics Seminar
TBA
Natasa Pavlovic (University of Texas at Austin)
4:00 PM in SEO 636
Friday May 1, 2015
pdf * Departmental Colloquium
Atkin Memorial Lecture
Alireza Salehi-Golsefidi (University of California, San Diego )
3:00 PM in TBA
HTML 5 CSS FAE
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