Department of Mathematics and Computer Science
Number Theory and Combinatorics Seminar
Fall 2014
Talks are at noon on Monday in room B660 of University Hall
 
For more information, or to receive an email announcement of each week's seminar,
contact Nathan Ng < ng AT cs DOT uleth DOT ca > or Dave Morris <Dave.Morris@uleth.ca>.
 
                The next talk:

Nov 17
at noon
in UHall B660
Manoj Kumar
(University of Lethbridge)
The Signs in an Elliptic Net
Let \(R\) be an integral domain and let \(A\) be a finitely generated free abelian group. An elliptic net is a map \(W \colon A\longrightarrow R\) with \(W(0)=0\), and such that for all \(p,q,r,s \in A\), \begin{align*} W(p+q+s) \, W(p-q) \, W(r+{} & s) \, W(r)\\ {} +W(q+r+s) & \, W(q-r) \, W(p+s) \, W(p)\\ & {} +W(r+p+s) \, W(r-p) \, W(q+s) \, W(q)=0. \end{align*} In this talk we will give a formula to compute the sign of any term of an elliptic net without actually computing the value of that term.

 
Talks in the series this semester:
(Click on any title for more info, including the abstract. Then click on it again to hide the info.)

Date Speaker Title

Sept 8 everyone Open problem session

Sept 15 Joy Morris Colour-permuting automorphisms of Cayley graphs

Sept 22 Farzad Aryan On Binary and Quadratic Divisor Problem

Sept 29 Adam Tyler Felix Common divisors of the index and order of \(a\) modulo \(p\)

Oct 6 Nathan Ng Inclusive Prime Number Races

Oct 20 Sean Fitzpatrick Characters of induced representations

Oct 27 Kevin Henriot Linear equations in dense subsets of the squares
UBC

Nov 3 Amir Akbary Heuristics for Some Conjectural Constants

Nov 10 James Parks Averages of the number of points on elliptic curves

Nov 17 Manoj Kumar The Signs in an Elliptic Net

Nov 21 Soroosh Yazdani Belyi maps and Diophantine Equations
Friday

note special day!
Google
(Waterloo, ON)

Dec 1 Speaker TBA Title TBA
 
Past semesters: Fall 2007 Fall 2008 Fall 2009 Fall 2010 Fall 2011 Fall 2012 Fall 2013
Spring 2008 Spring 2009 Spring 2010 Spring 2012 Spring 2013 Spring 2014