Address:
Dept. of Mathematics & Statistics
Queen's University
Kingston, Ontario
Canada K7L 3N6
Location: 503 Jeffery Hall
Telephone:
office: (613) 533-2389
fax: (613) 533-2964
Email:
wehlau@rmc.ca
and wehlau@mast.queensu.ca
Asia Mathews took a permanent position on the faculty of Quest
University in British Columbia.
Yinglin Wu finished his Ph.D. in September 2009 and now works on
in IT in Ottawa.
Emilie Dufresne completed her Ph.D. in August 2008. She is now a
lecturer in algebra at the University of York in
England.
Sebi Cioaba is an Assistant Professor at the Univerity of
Deleware.
Jianjun Chuai finished his Ph.D. in August 2003 and was a faculty
member at a number of Canadian universities before taking his
retirement.
Cody Roth took a job working at the Jet Propulsion Lab for NASA.
Moufid al Mahdi went on to use his expertise to work for the
Canadian government in Ottawa.
Keshia Yap wento n to work for TikTok in Singapore
Heather Topping is working as a term professor at the Royal
Military College in Kingston.
Sean Zimmerman finshed in August 2013 and then took up a job with
Microsoft in Seattle.
Daniel Bruce went on to study Quantitative Finance at the
University of Waterloo.
Joe Oldford continued his career officer in the Canadian military.
Chester Weatherby became an assistant Professor at the Wilfrid
Laurier University in Waterloo,
Ontario.
Chris Brav took up a position as a Post Doctoral Fellow at the
Mathematical Institute at Oxford University in the UK.
Letitia Banu and David Giordano both went on to work in Toronto
doing financial mathematics for TD
Canada Trust.
Jenny Vandergraaf (now Jenny Waite) took a position working
for the United Way in Brockville, Ontario.
Catherine Chambers is now living in Alberta.
I have (co)-supervised a number of postdoctoral fellows.
In 2016 I was the principal organizer, aided by H.E.A. Cambell and
R.J. Shank, for the conference Algebraic
Combinatorics and Group Actions held at Herstmonceux
Castle in southern England.
I have co-organized two major conferences on algebraic groups.
I also study the interconnections between various conditions which guarantee that the ring of invariants are well-behaved. In particular, I am interested in the Popov (or Russian) conjecture. I have worked on this conjecture for quite a while and have proved it for some special cases including for connected abelian groups (tori).
I am also interested in complete caps in finite projective spaces, especially over the binary field. A cap is a set of points with no three points lying on the same line. A cap is complete if adding any another point to it causes it to have three collinear points. Complete caps are closely connected to certain important error correcting codes.
I am also interested in cryptography, both modern public key and other encryption systems and historic cryptography and cryptoanalysis. In the past I did some work for a Calgary company Non-Elephant Encryption . (There is a long story behind the name of the company.)
I received both my Master of Arts and my Ph.D. from the Department of Mathematics at Brandeis University . My Master's was in Number Theory with Dr. Paul Monsky as my supervisor. My Ph.D. thesis was on Invariant Theory and my supervisor was Dr. Gerald Schwarz .
After leaving Brandeis, I was an Assistant Professor at the University of Toronto in the Department of Mathematics for the period 1988-1992.
The algebraists at Queen's have a whole lot of fun doing research and attending our various seminars (including the algebraic and geometry seminar and the curve seminar).
I am also doing research in the area of Galois geometries and graph theory. Galois geometries are geometries where there are only a finite number of points, lines, planes, etc. Most of this work is with my collaborators Aiden Bruen, Lucien Haddad and Claude Tardif . My research on Galois geometries is concerned with finding maximal line free subsets in geometries over finite fields. I am also studying blocking sets. These are sets which meet every subspace of a given dimension. The study of blocking sets and line free sets yields methods to construct new encryption codes and/or shows that various desired codes cannot exist. In graph theory I am studying properties of colourings of hypergraphs.
I am a professor in the Department of Mathematics at the Royal Military College of Canada (which is a university even though the name makes it sound a little like a college). I do all my undergraduate teaching at RMC. Here I am lecturing on a day when I returned the exam. I am currently teaching two courses: Cryptography and Introduction to Sets and Logic. A few years ago Randy Elzinga typed up the notes for my cryptography course. These contain some typos which I will fix some day when I find the time.
Up until the spring of 2000, I was the coach of the RMC varsity badminton team . You can read all about my activities at RMC on my internal RMC homepage or on my public RMC homepage .
My wife, daughter and I have two cats. We live in downtown Kingston halfwaybetween RMC and Queen's.