Department of Mathematics
The Florida State University

This Week in Mathematics

8 - 12 September 1997

Monday: 8 September 1997
Graduate Seminar, 2:30 p.m., 327 OSB

Jeff Denny, Florida State University

Jobs and Mathematics: An AMS Video Followed by Discussion

Tuesday: 9 September 1997
Knot Theory Seminar, 3:35 p.m., 104 Love Building

Javier Arsuaga, Florida State University

Simplification of DNA Topology Below Equilibrium Values by Type II Topoisomerases

Wednesday: 10 September 1997
Complex/Symbolic Coffee, 3:15 p.m., 105 Love Building
Complex/Symbolic, 3:35 p.m., 102 Love Building

Yaacov Kopeliovich, Florida State University

Reflections on Computation in Braid Groups
Given a moduli space of Riemann Surfaces it is a folklore that the fundamental group of the Moduli space acts on the collection of functorial objects associated to a Riemann Surface. (e.g coverings, Homology, holomorphic differentials etc.) In this talk we give 2 examples of it and explain how to realize this action explicitly. The fundamental groups of these moduli spaces are subgroups of the Braid group which enables to do computations very explicitly. We explain the relevance of one example to some questions of existence of functions of certain type on a generic Riemann Surfaces of genus 1.

Thursday: 11 September 1997
(Real) Analysis Seminar, 2:30 p.m., 102 Love Building

Informal Seminars this Semester

[contact oberlin@math.fsu.edu for additional information]

Algebra Seminar, 2:00 p.m., 104 Love Building

Warren Nichols, Florida State University

Algorithms in Invariant Theory

Applied Seminar, 3:35 p.m., 200 Love Building

Steve Blumsack, Florida State University

Synchronization of Populations

Topology Tea Time, 3:00 p.m., 204 Love Building
Topology Seminar, 3:35 p.m., 104 Love Building

to be announced

Friday: 12 September 1997
Colloquium Coffee, 3:00 p.m., 204 Love Building
Colloquium, 3:30 p.m., 101 Love Building

Yuanan Diao, University of North Carolina at Charlotte

Geometry, Physics and Statistics of Real Knots

In recent years, knot theory has emerged as an important tool in scientific research. Knots have been found in many large molecules such as DNA and polymer chains. The topological structures of these molecules play an important role in determining their physical properties and need to be understood. Models of random knots are used to simulate the random knotting and linking occured in experiments such as a DNA topological enzymology experiment. In this regard, the traditional definition of a knot, namely a simple closed curve in $R^3$, is not accurate enough to simulate a DNA since a DNA is more like a rope with certain thickness. In this talk, we will discuss how we can ``thicken'' a knot up using its geometry. We will also discuss how to define ``energy'' of a knot and how to use the thickness and energies of knots to understand the complexity of the knots.

Mathematical Biophysics, 2:00 p.m., NHMFL A336

Stacey McNiel, Florida State University

Protein Geometry, Part II: Helix Packing

Scientific Computing Seminar, 4:30 p.m., 200 Love Building

Konstantin Kurbatskii, Florida State University

Solid Wall Boundary Conditions for Viscous Acoustics Problems

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Abstracts

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Graduate Student Seminar: Coming Attractions

Tuesday Algebra Seminar: Coming Attractions

Hopf Algebra Seminar: Coming Attractions

Knot Theory Seminar: Coming Attractions

(Real) Analysis Seminar: Coming Attractions

Complex/Symbolic Analysis Seminar: Coming Attractions

Algebra Seminar: Coming Attractions

Applied Seminar: Coming Attractions

Topology Seminar: Coming Attractions

Mathematical Biophysics Seminar: Coming Attractions

Scientific Computing Seminar: Coming Attractions

Scheduled Colloquia Speakers - 1997

19 September, BOR review, No Colloquium
26 September, A. Iosevich

3 October
10 October, C.C. Chang
17 October
24 October, J. Shang
31 October

7 November, S. Hochwald
14 November
21 November, A. Fridman

5 December,
9 January
16 January
23 January
30 January, T. Schlick

6 February
13 February
20 February
27 February

6 March
13 March, SPRING BREAK
20 March, SIAM MEETING
27 March

3 April
10 April
17 April
24 April