Funding is available to support a DPhil (=PhD) student at Oxford University and Exeter College for a full 3.5 years from October 2013 to work with me and the rest of the Chebfun team in areas related to numerical computation with functions. The project may be centered anywhere over a wide range from theory to software design, with the precise research topic adapted to the successful applicant's particular strengths and interests. Candidates must have an excellent mathematical background and serious commitment to numerical computation. To see the flavor of our work, see my home page and also www.chebfun.org. If you think you might be interested in this opportunity, please contact me by email and note that a formal application must be submitted through the Oxford University web site by May 20. Full advertisement and application details: see http://www.maths.ox.ac.uk/node/22165.