News & Events
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Seminars & Workshops
The Department of Mathematical Sciences enjoys an active Colloquium series. There are also departmental research seminars in Analysis and Discrete Mathematics. All our events are open to students and the public, and are free to attend.
- N. Rao Chaganty,
Old Dominion University, Multivariate Discrete Models Based on Copulas for Repeated Measurements. Thursday, June 3, noon to 1, KT 218.
- The multivariate normal distribution is often used in the modeling andanalysis of repeated measurements such as clustered and longitudinal data. While the multivariate normal distribution can simplify analysis in the continuous case, no corresponding multivariate distribution analogue has been commonly accepted for discrete variables such as binary, count or ordinal variables. The use of copulas for modeling multivariate discrete responses is seen as a promising solution. Specifically, exchangeable copulas can be used to model clustered discrete data, while longitudinal discrete data can be modeled by an appropriate copula with decreasing time-lag dependence. The specification of the multivariate discrete distribution through the use of copula functions provides complete inference, in the sense that maximum likelihood estimation and the calculation of joint and conditional probabilities are possible. In this talk, I will provide a concise introduction to copulas and discuss various methodologies for parameter estimation.
- Yu Yan, Huntington University, The Scalar Curvature Deformation Equation on Locally Conformally Flat Compact Manifolds. April 28.
- Natalia Zorii, Institute of Mathematics, National Academy of Sciences of Ukraine, Equilibrium Problems for Infinite-Dimensional Vector Potentials with
External Fields. May 14.
- Peter Dragnev, Asymptotic behavior of Carleman orthogonal polynomials.
- Adam Coffman, Glaeser's Inequality on an Interval.
Pi Math Club
- Student talks: Cynthia Ellis, Origami: More than an art form; and Cindy Harter, A tale of transitivity.
- Lunchtime talk: Paul Richeson (IPFW student and intern at Lincoln Financial), and Rick Richmond, FSA, MAAA (actuarial consultant at Lincoln Financial), Becoming an Actuary.
- D. Maloney, IPFW Physics, Problems and Problem Solving Tools.
Pi Mu Epsilon
- Adam Coffman, Möbius transformations and ellipses.
- Johann S. Brauchart,
Vanderbilt University, Weighted Minimal Energy Problem on the Unit Sphere. Aug. 28.
- Consider an isolated charged sphere in the presence of an external field exerted by a point charge over the North Pole. Point charges are thought to interact according to the Riesz s-potential 1 / r^s with d-2<s<d. (Here, d+1 is the dimension of the embedding space.) We present results from joint work with Peter Dragnev and Ed Saff concerning the weighted extremal measure solving this external field problem and its properties (support, representation, potential).
- N. Rao Chaganty, Old Dominion University, Analysis of Clustered and Longitudinal Binary Data. Sept. 4.
Pi Math Club
- G. Petruska, IPFW Computer Science, Series and Products: Euler's Wizardry.
- Debraj Chakrabarti, University of Notre Dame, CR Functions on Singular Hypersurfaces.
- David Benko, University of South Alabama, The Integrity of Graphs.
- Adam Coffman, CR singularities of real 4-manifolds in C3, part III.
Pi Mu Epsilon
- John LaMaster, The fourth dimension.
Pi Math Club
- Student Research Talks:
- Garret Marshall, The confessions of tortured data
- Richard Grzych, Relax, problem solved
- Ryan Fritz and Chris Baber, How financial indicators compare with an economic indicator
- L. Beineke, IPFW, Through the Lurking Graphs.
- Peter Dragnev, School Districts on Mars, Fuel Depots on Jupiter, Inimical Dictators on Neptune?! Or How to Arrange Points on the Sphere.
- Drew Swartz, IPFW undergraduate math major, An Investigation of the Structure Underlying Irreducible Divisors.
Archive of Past Seminars, Colloquia, and Events (1997-2008)
Some other past events:
- Midwest Graph Theory conference, MIGHTY XLIII, 2006: link to photo page
- Midwest Graph Theory conference, MIGHTY XXXII, 1999
- Spring Meeting of the Indiana Section of the MAA, 2005
- Physics-Based Calculus: summer workshops 2001 - 2005