NIU Department of Mathematical Sciences

Upcoming Colloquia and Seminars

October 26-31, 2014

Math Department Colloquium

Friday, November 7, 4:00-5:00 p.m. in DU 348
Speaker: Alexander Fletcher, Wolfson Centre for Mathematical Biology, Oxford
Title:   Tales from the crypt: mathematical modelling of intestinal health and disease


Algebra Seminar:   Thursday, Nov. 20, 3:00-4:00 p.m. in DU 152
Speaker: John Beachy
Topic: Noncommutative Localization (continued)

Complex Analysis Seminar:   Tuesday, Nov. 11, 12:00-12:50 p.m. in Graham 342
Speaker: Doug Macclure
Topic: Classification of Quasiregular Poincare Linearizers
Abstract: Harmonic continued fractions are a locally greedy algorithm for representing an interval of real numbers by a sequence of positive integers. As with many similar representation systems, this algorithm is described by an interval map, making such a system an example of a one dimensional dynamical system. Harmonic continued fractions have the interesting property that the digits of pi/2 follow a simple pattern in the system. What is more interesting is that we can show that as a consequence of this result, as well as others, that the number pi/2 is exceptional in that it falls in a set of measure zero in terms of the distribution of it's digits! Time permitting, I will also address a conjectured description of the dynamics of the system, the detailed proof of which, is still in progress.