The Humboldt State University
Department of Mathematics

Presents:

# The 46th Harry S. Kieval Lecture**

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## Thursday, November 10, 2005

*8:00
P.M.*

*Founders Hall 118*

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### Marjorie Senechal

Smith College

“Math as Fiction, Fiction as Math”

The kinship, even twinship, of mathematics and music has been explored for
thousands of years, from the Pythagoreans on Samos to researchers in magnetic
brain scan labs. "Math and Art" exhibitions and festivals abound.
But mathematics and fiction? The relations between these arts have been largely
ignored. Yet, as I will explain, they are deeper and stronger than you might
guess.

****A lecture on some popular and/or broad aspects
of mathematics attractive to undergraduates and the public**

**For More Information go to: **__http://www.humboldt.edu/~math/kieval/__

**HSU is an AA/EO institution.**

**Disability accommodations may be available
from event sponsor at 826-5347**

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#### MATHEMATICS DEPARTMENT COLLOQUIUM

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Professor Marjorie Senechal

Smith College

##### Thursday

##### November 10th, 2005, 4:00 P.M.

NR 101

###### Pre-Colloquium Tea

###### 3:30 P.M. in Library 56

“3-D
Penrose Tilings: Some Puzzling Problems”

The discovery of quasicrystals in 1984 generated a landslide of research
in the mathematics of aperiodic order. As attention shifted from the concrete
(e.g., the curious properties of Penrose and other aperiodic tiles) to the
abstract (e.g., dynamical systems and model sets), interesting questions in
3-space were left behind. In this talk I will focus on three-dimensional analogues
of Penrose tiles, including the first-ever set due to Robert Ammann, and review
some unsolved problems they pose.

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