Gravitational Waves Jolien Creighton University of Wisconsin-Milwaukee Professor of Physics "I'll present a sketch of how gravitational waves are produced and how they are detected. I will use GW150914 - the first gravitational wave to be detected - as a... Read More
A Scalable Parallel Sparse Linear System Solver Ahmed H. Sameh Purdue University Department of Computer Science “Numerous computational science and engineering applications give rise to large sparse linear systems for which one needs approximate solutions that yield only modest relative... Read More
Strongly Nilpotent Matrices and a Generalization of a Theorem of Konstant Mark Colarusso University of South Alabama Assistant Professor of Mathematics “Consider the set of n x n complex, nilpotent matrices with the property that every submatrix in the top... Read More
Numerical Analysis of Matrix Rank Deficiency Zhonggang Zeng Northeastern Illinois University Professor of Mathematics “Rank deficient matrices are frequently encountered and often dreadful in scientific computing, but rarely elaborated in numerical analysis textbooks. Accurate solutions of problems involving such matrices... Read More
Auslander's Theorem for Permutation Actions on Noncommutative Algebras Jason Gaddis Miami University Assistant Professor of Mathematics “Let G be a small finite group acting linearly on a polynomial ring A over an algebraically closed field of characteristic zero. A famous... Read More
The Fundamental Group of the Menger Sponge and the Towers of Hanoi Hanspeter Fischer Ball State University Professor of Mathematics “The classical fractal known as the "Menger sponge" is what remains of a solid cube after drilling infinitely many (ever... Read More
Variations in the Practical Predictability of Severe Weather Events Due to Model Resolution and Storm Environment Ryan Sobash University of Wisconsin-Madison Visiting Assistant Professor "As computing power has increased, numerical weather prediction (NWP) models are routinely being run with finer... Read More
1-Manifolds Galore! Laurence Siebenmann University of Paris-SUD Professor of Mathematics “I will present a combinatorial classifcation, up to homeomorphism, of all simply connected, separable, non-Hausdorff, 1-dimensional manifolds (possibly with boundary), each having only finitely many singular points. These often occur... Read More
Automatic, Multiple Assessment Options in Undergraduate Math and Science Education Jonathon Kahl University of Wisconsin-Milwaukee Professor of Atmospheric Science “Since 2008, automatic, multiple assessment options have been utilized in selected undergraduate meteorology courses at the University of Wisconsin– Milwaukee. Motivated... Read More
Some Unitary Representations of R. Thompson's Groups F and T Vaughan Jones Vanderbilt University Stevenson Distinguished Professor Fields Medal Recipient “Thompson’s groups are groups of piecewise linear homeomorphisms of the interval and circle where all the non-smooth points are dyadic... Read More