
Invited Speaker David Boyd Professor University of British Columbia Vancouver, B.C. 
Email: 
boyd@math.ubc.ca 
Homepage: 
http://www.math.ubc.ca/people/faculty/boyd/boyd.html 
Paper: 
The Beta Expansion for Salem Numbers 
Talk: 
Are Salem numbers betanumbers? 
Abstract: 
The beta transformation is the mapping on the unit interval defined by multiplication by $\beta$ mod 1. $\beta > 1$ is a betanumber if 1 is an eventually periodic point of this mapping. It is known that all Pisot numbers of any degree and all Salem numbers of degree 4 are betanumbers. We describe computational and heuristic arguments which suggest that all Salem numbers of degree 6 are betanumbers but that this is not true for higher degrees. 
Born: 
Canada 
Education: 
Undergraduate  Carleton University, Ottawa
Graduate  University of Toronto

Family: 
Two of my children are artists and one is a budding author.

Interests: 
I am very interested in Music  jazz and popular guitar
especially. Also, I enjoy Hiking and Reading 
Inspirations: 
I've been inspired to try out different areas
of Mathematics by the many interesting mathematicians I have
met over the years: to mention a few, Leo Moser, Marshall Hall
and Kurt Mahler.
