Monday, June 17

10:00 AM-12:00 PM

Room 303
## MS2

Automatic Sequences

Automatic sequences (generated by finite automata) can be studied from the point of view of mathematics, computer science or physics. One of the most important results is the theorem of Christol, Kamae, Mendes France, and Rauzy (1980) which shows the equivalence between a language-theoretic (or even combinatorial) property of a sequence (being q-automatic) and an algebraic property of the associated formal power series in F_q[[X]] (being algebraic over the field F_q(X)).
The speakers will discuss recent results in transcendence theory (in particular for the Carlitz functions), in theoretical computer science (combinatorics on words) and in the physics of disorder (quasicrystals).

**Organizer:Jean-Paul Allouche**

CNRS, France

**10:00 Automatic Sequences and Applications**
- Jean-Paul Allouche, Organizer
**10:30 Transcendence of the Values of the Carlitz Functions**
- Valerie Berthe, CNRS, France
**11:00 Continued Fractions and Automatic Sequences**
- Jeffrey Shallit, University of Waterloo, Canada
**11:30 Invertible Morphisms**
- Zhi-Ying Wen, Wuhan University, People's Republic of China

*MEM, 3/21/96*