Thursday, May 22

10:00 AM-12:00 PM
Chair: Sue Ann Campbell, University of Waterloo, Canada Maybird - Level C

Bifurcation and Symmetry

10:00 Stability of the Whirling Modes of a Hanging Chain (Kolodner's Modes)
Warren Weckesser, Rensselaer Polytechnic Institute
10:20 Instabilities of Spatio-Temporally Symmetric Periodic Orbits
A. M. Rucklidge, University of Cambridge, United Kingdom; and Mary Silber, Northwestern University
10:40 On a Neutral Functional Differential Equation Modelling a Simple Physical System
Sue Ann Campbell, University of Waterloo, Canada
11:00 Bifurcation Leading to Hysteresis
Gregory Berkolaiko, University of Strathclyde, United Kingdom
11:20 Feedback-Assisted Instability Detection
Jason S. Anderson, Georg Flatgen, and Yannis G. Kevrekidis, Princeton University; Katharina Krischer, Fritz-Haber-Institüt der Max-Planck-Gesellschaft, Germany; and Ramiro Rico-Martinez, Instituto Tecnologico de Celaya, Mexico
11:40 Grazing Bifurcations in a Piezoelectric Impact Oscillator
Sandeep T. Vohra, Naval Research Laboratory
12:00 An Introduction to Groebner Bases and Invariant Theory
T. K. Callahan and Edgar Knobloch, University of California, Berkeley

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LMH, 1/07/97
TMP, 4/4/97