The Computer Algebra Group at Simon Fraser

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## CAG Schedule for 1999

February

**10**(snow storm - SFU was closed)

**17**Edgardo Cheb-Terrab, ``Some Problems in Differential Eqations''

**24**Michael Monagan, ``Maple Internal Structures and Consequences''

**March**

**03**Greg Fee, ``GCDs in Z[x,y] Using phi(a(x,y)) = a(h(y),y) for h(y) is in Z[y]''

**10**Kevin Hare, ``RSA, LLL, and Coppersmith's Theorem''

**17**Petr Lisonek, ``Reconstructing Complex Rationals from Modular Images''

**24**Peter Borwein, ``Three Pieces of (Computational) Number Theory and a Litle Philosophy''

**31**Mark Siggers, ``Generic Univariate Hensel Lifting''

**April**

**07**(starting at 9:00am!) Michael Ludkovski, ``Browns Dense Modular GCD Algorithm versus Zippel's Sparse Modular GCD Algorithm'' (Directed Studies talk) Wolfram Bentz, ``Berlekamp's Factorization Algorithm for a(x) in Zp[x]''

**14**Matt Klassen, ``The Reverse Engineering Calculator''

**20**A DAY OF MAPLE AT SIMON FRASER: 9:30-9:50 Greg Fee: ``Gauss-Legendre quadrature'' 10:00-10:20 Allan Wittkopf: RIFsimp: a package for simplification and preprocessing of PDE/ODE systems. 10:30-10:50 Edgardo Cheb-Terrab: Computer algebra approach for solving analytic systems of DEs. 11:00-12:00 Jacques Carette: ``What's new in the Maple kernel.'' 1:30-2:30 Jaques Carette: ``What's new in the Maple library'' 2:30-2:50 Petr Lisonek: Simplification of elementary functions and elementary constants in Maple. 3:30-3:50 Kevin Hare: Rapid computation of Bernoulli numbers, Euler numbers and other rational poly-exponential functions. 4:00-4:20 Matt Klassen: ``Number recognition: the reverse engineering calculator''

**May**

**12**Edgardo Cheb-Terrab, ``On the Hunt for New Integrable Abel ODE Classes''

**26**Petr Lisonek, ``Applications of Elimination Theory in Geometric Reasoning''

**June**

**02**Petr Lisonek, ``Applications of Elimination Theory in Geometric Reasoning'' (Part 2)

**09**Edgardo Cheb-Terrab, ``The Grassmann Package''

**16**Edgardo Cheb-Terrab, ``The Quantum Fields (QFT) Package''

**30**Michael Monagan, ``Visual's for Concepts in Undergrad Mathematics''

**July**

**14**David Holmgren, ``Information from the Stars - Nonlinear Least-squares in Astrophysics''

**21**Robert Israel, ``Rigidity of Tetrahedra''

**28-31**ISSAC

**August**

**September**

**22**Michael Monagan, ``Computing in Q(alpha)[x1,x2,...,xn] where the Number Field Q(alpha) has Low Degree''

**29**Edgardo Cheb-Terrab, ``dsolve Design''

**October**

**06**Michael Monagan: ``Rational Reconstruction Applied to lex Groebner Bases'' Greg Fee: ``Fast Computation of Binomial Coefficients''

**13**Allan Wittkopf: ``The Characteristic Sets Method for Solving Systems of Polynomial Equations'' Michael Monagan: ``A Fast Implementation of the Dense Modular GCD Algorithm for Z[x,y] and a Comparison with Other Methods in Maple''

**20**Petr Lisonek, ``Some Properties of Multipolynomial Resultants''

**27**Kevin Hare, ``Pisot Numbers''.

**November**

**10**Colin Percival, ``Rapid Multiplication Modulo a +- b, e.g. k*2^n +- 1''

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