Department of Mathematics
The Florida State University

This Week in Mathematics

5 - 9 October 1998

Monday: 5 October 1998

Tuesday: 6 October

Algebraic Geometry Seminar, 2:00 p.m., 104 Love Building

Angela Vierling, Florida State University
Hilbert's Nullstellensatz

Knot Theory Seminar, 3:35 p.m., 104 Love Building

De Witt Sumners, Florida State University
The Topology of Int Recombination III

Wednesday: 7 October

(Real) Analysis Seminar, 2:30 p.m., 102 Love Building

Working through the Multidimensional van der Corput Estimates of Carbery, Christ, and Wright

Complex/Symbolic Coffee, 3:15 p.m., 105 Love Building
Complex/Symbolic Seminar, 3:35 p.m., 102 Love Building

Craig Nolder, Florida State University
Quantum Mechanics: An Informal Introduction

Thursday: 8 October

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

Eriko Hironaka, Florida State University
Lie Algebras and Representation Theory

Topology Seminar, 3:35 p.m., 104 Love Building

Bill Adams, Florida State University
Moduli Spaces of Algebraic Curves

Friday: 9 October

No Graduate Student Seminar, 12:20 p.m., 204 Love Building

Colloquium Coffee, 3:00 p.m., 204 Love Building
Colloquium, 3:30 p.m., 101 Love Building

Ken Stephenson, University of Tennessee, Knoxville
The Story of a Pentagonal Tiling and Its "Pentagonal" Number
The talk will begin with construction of the beautiful "regular" pentagonal tiling of the plane due to Phil Bowers and me. It illustrates the new class of "conformal" tilings, many of which manifest a mysterious type of tiling self-scaling. I would have thought it unlikely that one could learn much about the associated scaling factors, but in a surprising new construction based on rational iteration, Cannon, Floyd, Parry, and Kenyon have managed to find the precise factor for the pentagonal tiling! Moreover, it is the digitally-fascinating number (-324)^1/5. I'll describe their technique, derive this number, and pose some of the remaining mysteries in this new topic.

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

Hao Shen, Florida State University
Numerical Simulation of Hot Jet Screech

Seminars and colloquia at "that other" university [a.k.a. the University of Florida]

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