David Howden

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I'm a PhD Student at The Mathematics Institute, University of Warwick. My supervisor is Derek Holt.

Research Interests

• Group Theory
• Computation Group Theory

Teaching

• MA442 Group Theory (Term 1)

Software

• CWRED Coxeter Word Reduction
  Includes highly optimised algorithm to compute geodesic automata for Coxeter groups. Also implements word reduction for Coxeter groups.
• Confluence
  Generic (using C++ templates) confluence algorithms. Includes classes for handling strings.
• PlanarGraph
  Package for creating and manipulating planar graphs. Includes drawing routines using sphere packing (implemented by Sebastian Jörn).
• Schreier-Sims Algorithm
  Speedy implementation of the basic Schreier-Sims algorithm implemented in C++. Computes the order of permutation groups and tests membership of elements.
• FLINT: Fast Library for Number Theory
  As an undergrad, I contributed the beginnings of the zmod_poly module (polynomials with coefficients mod p, where p is less than 2^63), including KS multiplication. Also contributed code to compute Bernoulli numbers using zmod_poly.

iPhone/iPod Touch Apps

• Proms Guide - unofficial guide to the BBC Proms 2011. Full programme listings, searchable by artists and composers. Full calendar integration and alert reminder notifications.
• boxd - fun, simple and incredibly addictive strategy game.

TextMate Bundles

Include language definition (for syntax highlighting) and some basic snippets.

• Magma Bundle
• GAP Bundle

Websites

• dhowden.com
• buyandsellbooks.co.uk

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David J. A. Howden
The Mathematics Institute,
University of Warwick,
Coventry,
CV4 7AL.