Weekly Bulletin

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Current News

**DEADLINES**- Please see Joann Hower in 273 AH for further information and application forms.
**Research Board****Scholar's Travel Fund**September 23, 1996 October 7, 1996 October 21, 1996 November 4, 1996 November 18, 1996 December 2, 1996 December 9, 1996 January 6, 1997 January 27, 1997 February 3, 1997 February 24, 1997 March 3, 1997 March 17, 1997 April 7, 1997 April 7, 1997 June 2, 1997

**NAMED LECTURESHIPS****Professor Imre Barany**of Yale University will give the Arthur B. Coble Memorial Lectures on October 1, 2 and 3, 1996.**Professor John Lewis**of the University of Kentucky will give the Trjitzinsky Lectures on April 1, 2 and 3, 1997.

**JEWISH HOLIDAYS**- Please avoid scheduling exams on these dates:
Yom Kippur **Monday, September 23**Sukkot Begins **Friday, September 27**

**IMPORTANT DATES****10/11**Last day for graduate students to add a semester course **10/23**Probable date mid-semester grades for freshmen are due in 273 AH (Pat) **10/25**Last day for undergraduate students to drop a semester course or to arrange for the credit/no credit option **11/02**Registration for the Spring semester begins **11/22**Last day for graduate students to drop a semester course **11/28-12/1**Thanksgiving Holiday - All University offices are closed **12/13**Last day of instruction **12/14**Reading Day **12/16-21**Final Exams

Coming Events

**1996-97 ARTHUR B. COBLE MEMORIAL LECTURES****Professor Imre Bárány**of the Mathematical Institute of the Hungarian Academy of Sciences will deliver the 26th annual series of**Arthur B. Coble Memorial Lectures**at the University of Illinois at Urbana-Champaign on October 1, 2, and 3, 1996.- The lectures are scheduled as follows:
**Tue., October 1****4:00 PM****314 Altgeld Hall****Affine perimeter and limit shape.****Wed., October 2****4:00 PM****314 Altgeld Hall****On the convex hull of the integer points in a ball.****Thurs., October 3****4:00 PM****314 Altgeld Hall****A colourful version of Carath‚odory's theorem with applications.****Coffee and tea will be available in 321 Altgeld Hall each day at 3:15 PM.**

**Thursday - October 10, 1996.**

**MATHEMATICS COLLOQUIUM.****Prof. John Sullivan; Conformal Knot Energies and a Higher-Dimensional Generalization.**An energy for knots, invariant under Moebius transformations of the ambient space, was considered by Freedman et al. We will describe this energy and others with similar properties, and discuss how they can be extended to surfaces and higher-dimensional submanifolds. We have performed extensive computer experiments with these energies, and will show some of the results, including a six-minute computer video.

Weekly Calendar

Monday | Tuesday | Wednesday | Thursday | Friday |
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Monday, September 23, 1996

**3:00 PM - 3169 Beckman Institute**

**THEORETICAL BIOPHYSICS SEMINAR.****Dr. Gisbert Schneider**, Free University of Berlin, Institute for Medical/Technical Physics and Laser-Medicine, Berlin, Germany;**Sequence-oriented peptide design by neural networks and evolutionary algorithms.****Abstract.**

**4:00 - 5:00 314 Altgeld Hall****Math 400. Introduction to Graduate Mathematics.****Prof. Stephanie Alexander, Introduction to Geometry, II.**

Tuesday, September 24, 1996

**11:00 AM - 245 Altgeld Hall**

**GEOMETRIC POTPOURRI SEMINAR.****Prof. Peter Hamburger**, Indiana-Purdue University, Fort Wayne;**Venn Said It Couldn't Be Done.****Abstract.**

**11:00 AM - 247 Altgeld Hall****MAX NEWMAN TOPOLOGY SEMINAR.****Prof. Robert Craggs; Framed Surgery Invariants for Free Reduction Problems, II.**

**11:00 AM - 2 Illini Hall****PROBABILITY & STATISTICS SEMINAR.****Prof. Jeff Collamore**, UIUC Department of Statistics**Hitting Probabilities of Rare Sets in Rd.****Abstract.**

**1:00 PM - 247 Altgeld Hall****ANALYTIC NUMBER THEORY SEMINAR.****Prof. Douglas Bowman; Rudiments of Q-Difference Equations, Part 1.**

**1:00 PM - 241 Altgeld Hall****QUANTUM GROUPS SEMINAR.**- Mr.
**Kevin Fitzgerald; Poisson-Lie Groups and Quantum Yang-Baxter Equations, I.**

**2:00 PM - 241 Altgeld Hall****DIFFERENTIAL GEOMETRY.****Prof. John Sullivan; Triunduloids: Embedded CMC Surfaces with Three Ends.**

**2:00 PM - 245 Altgeld Hall****GROUP THEORY.****Prof. Derek Robinson; Permutability of Subgroups of Finite Groups, II.**

**2:00 PM - 155 Altgeld Hall****LOGIC SEMINAR.****Carl Jockusch; Ramsey's Theorem and Computability Theory.**

**2:00 PM - 159 Altgeld Hall****SPECIAL SEMINAR.**- Mr.
**David Perry; Topological Groups III: Profinite Groups.**

**2:00 PM - 243 Altgeld Hall****STOCHASTIC ANALYSIS SEMINAR.****Professor Burgess Davis**, Purdue University;**Self-interacting random walk.**

**3:00 PM - 247 Altgeld Hall****COMBINATORICS AND GRAPH THEORY SEMINAR.****Peter Hamburger, Indiana-Purdue University, Fort Wayne; Planar Graphs, Hamiltonian Cycle And Special Families Of Simple Jordan Curves.****Abstract.**

**3:00 PM - 241 Altgeld Hall****REPRESENTATON THEORY SEMINAR.**- Mr.
**Gary Schwartz**; Elementary divisors of the Cartan matrix, III.

Wednesday, September 25, 1996

**3:00 PM - B02 C&SRL (Computer and Systems Research Lab)**

**DECISION, CONTROL, and OPTIMIZATION SEMINAR.****Professor Jure Medanic**, Department of General Engineering and Coordinated Science Laboratory;**Advanced Variable Structure Controllers for Multi-Input Nonlinear Systems.**

**4:00 PM - 314 Altgeld Hall**

**MATHEMATICS DEPARTMENT FORUM**.- No meeting this week.

Thursday, September 26, 1996

**12:00 PM - Room 247 Altgeld Hall**

1:00 PM - Room 245 Altgeld Hall**Lecture:**MODULI OF VECTOR BUNDLES SEMINAR.**Prof. Steven Bradlow; 2.1-2.4 of Hitchin's paper - in detail.**

**1:00 PM - 247 Altgeld Hall****ANALYTIC NUMBER THEORY SEMINAR.****Prof. Adolf Hildebrand; Tauberian Theorems for power series: the high index theorem.**

**1:00 PM-2:30 PM - 243 Altgeld Hall****MODEL THEORY SEMINAR.**- Mr.
**Scott Coon; Logarithmic-Exponential Series, continued.**

**2:00 PM - 247 Altgeld Hall****ALGEBRAIC NUMBER THEORY SEMINAR.****Prof. Nigel Boston; A function field analogue of Serre's conjecture.**

**2:00 PM - 245 Altgeld Hall****ANALYSIS SEMINAR.**- Mr.
**James Colliander; Wellposedness results for the Zakharov system.**

Friday, September 27, 1996

**11:30 AM - 143 Mechanical Engineering Building****MATHEMATICS IN SCIENCE AND SOCIETY COLLOQUIUM.****Prof. Ingrid Daubechies**, Department of Mathematics, Program in Applied and Computational Mathematics, Princeton University;**How I Became a Mathematician.****Abstract.**

- 1:00 PM - 1320 Digital Computer Laboratory
**MATHEMATICA 3.0 SEMINAR.****Prof. Stephen Wolfram**, Wolfram Research Center; In this talk Stephen Wolfram will give a**live demonstration of Mathematica 3.0**, will discuss the intellectual advances that made it possible, and will outline his vision for the future of technical computing and technical communication. Anyone with an interest in science, technolgy or computing is welcome.

**4:30 PM - 314 Altgeld Hall****MATHEMATICS IN SCIENCE AND SOCIETY COLLOQUIUM.****Prof. Ingrid Daubechies**, Department of Mathematics, Program in Applied and Computational Mathematics, Princeton University;**Surfing with Wavelets.****Abstract.****Coffee and tea before the talk in 321 Altgeld Hall at 3:15 PM.**