Upcoming seminar: grid algebra and finite difference methods

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Speaker: Dr. Michael P. Lamoureux, University of Calgary
Location: Mathematical Sciences 431
Date: Thursday, February 16, 2017
Time: 15:00-16:00

Title: Grid algebra and finite difference methods

Abstract: We are all familiar with linear algebra and methods for representing linear operators as an n by n matrix. Today, we will discuss representing operators on a 2D or 3D grid, or more generally on a directed graph. We develop linear algebraic methods to simplify or factor the operator into a form that is easy to solve using back-substitution. Such techniques are useful in numerical solutions of partial differential equations. We apply the technique to implement an implicit solver for a finite difference algorithm applied to the wave equation in two dimensions.

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