Department of Mathematics & Statistics Calendar Week of September 19 - 25, 2005 Monday, September 19, 2005 2:30 PM Statistics Seminar 459 MSc Dr. Craig L. ZIRBEL, BGSU "Stochastic grammars for modeling RNA sequences - Part II" ABSTRACT: Part I covered some biochemistry and introduced the problem of modeling the statistical variability of homologous RNA sequences. Part II will be about a broad class of models for such sequences. Because of the way in which RNA molecules fold over and interact with themselves, the nucleotide sequence has complicated long-range dependence which requires new types of probabilistic models to be developed. Stochastic grammars, which were first introduced to describe human languages, have many of the essential features, and so are a good starting point. After a brief description of the various kinds of grammars, we will see how a simple stochastic grammar can reproduce many features of RNA sequences. 3:30 PM Calculus Seminar 459 MSc Professor Steven M. SEUBERT, BGSU "Hyperbolic Functions, Ocean Waves, and Resonance" Tuesday, September 20, 2005 1:00 - 5:00 PM Preliminary Examinations 459 MSc 3:30 PM Analysis Seminar 400 MSc Professor Kit C. CHAN, BGSU "Construction of Operators with Prescribed Behavior (by Grivaux), Part 3" Wednesday, September 21, 2005 2:30 PM Statistics Committee Meeting 459 MSc 3:30 PM Algebra Seminar 459 MSc Nicholas IMMORMINO, BGSU "Clean Group Rings, Part 2" Thursday, September 22, 2005 1:00 - 5:00 PM Preliminary Examinations 459 MSc Friday, September 23, 2005 12:00 Noon Calendar Information Due to Cyndi (firstname.lastname@example.org) for next week's calendar 3:30 PM Refreshments served prior to the colloquium talk 3:45 PM Colloquium 459 MSc Professor Ivo HERZOG, Ohio State University - Lima "Pseudo-Finite Dimensional Representations of sl(2,k)" ABSTRACT: A Pseudo-finite dimensional representation of the Lie algebra L = sl(2,k)) is a module over the universal enveloping algebra U(L) that satisfies the axioms of a finite dimensional representation. We will show how all such representations may be induced from a von Neumann regular epimorphic ring extension U(L) \subseteq U'(L). Saturday, September 24, 2005 Sunday, September 25, 2005
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