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
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 now works at the University of Warwick in England. Sebi Cioaba is an Assistant Professor at the Univerity of Deleware. Jianjun Chuai finished his Ph.D. in August 2003 and now is at the University of New Brunswick in Fredericton, NB.
Sean Zimmerman finshed in August 2013 and then took up a job with Microsoft in Seattle. Daniel Bruce is currently studying Quantitative Finance at the University of Waterloo. Joe Oldford is an officer in the Canadian military. Chester Weatherby is an assistant Professor at the Wilfrid Laurier University in Waterloo, Ontario. Chris Brav is Post Doctoral Fellow at the Mathematical Institute at the Oxford University. Letitia Banu and David Giordano both work in Toronto doing financial mathematics for TD Canada Trust. Jenny Vandergraaf is now Jenny Waite and works for the United Way in Brockville, Ontario. Catherine Chambers is now living in Alberta.
Group Actions and Their Invariants
at the CMS summer meeting in Fredericton New Brunswick.
Click here for a list of speakers and slides from their talks.
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.
Eddy Campbell, Ian Hughes and Jim Shank are principally interested in finite groups which are of course much easier than infinite ones (well at least much smaller than infinite ones) but usually they make the problem hard by working in positive characteristic.
The algebraists at Queen's have a whole lot of fun doing research and attending our various seminars (including the algebraic geometry 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 .
Personal Info
My wife, daughter and I have a cat, a bunny rabitt and two fish. We live in Kingston in the former Pittsburg Township about 10 kilometers from RMC. On December 6, 2008 we had our first child, Megan. Here are some photos of my family in which Megan features prominantly.