Ian Hugh Sloan AO (born 17 June 1938,[1] in Melbourne) is an Australian applied mathematician.
He was a research scientist for the Colonial Sugar Refining company 1964–5, and since 1965 has been at the University of New South Wales, where he has been Scientia Professor since 1999.
[2] His early work was in theoretical nuclear physics, but he moved to applied mathematics, especially numerical analysis.
Sloan has published more than 200 papers covering areas such as the numerical solution of integral equations, numerical integration and interpolation, boundary integral equations, approximation theory, multiple integration, continuous complexity theory and other parts of numerical analysis and approximation theory.
He has made important contributions to the theory of numerical integration in many dimensions, in recent years concentrating on quasi-Monte Carlo methods.