David Bevan

David Bevan is an English mathematician, computer scientist and software developer. He is known for Bevan's theorem, which gives the asymptotic enumeration of grid classes of permutations and for his work on enumerating the class of permutations avoiding the pattern 1324. He is also known for devising weighted reference counting, an approach to computer memory management that is suitable for use in distributed systems.

Work and research Bevan was a lecturer in combinatorics in the department of Mathematics and Statistics at the University of Strathclyde. He has degrees in mathematics and computer science from the University of Oxford and a degree in theology from the London School of Theology. He received his PhD in mathematics from The Open University in 2015; his thesis, On the growth of permutation classes, was supervised by Robert Brignall. While employed by Pitney Bowes, he was a major contributor to the development of the FreeType text rendering library.

Bevan's mathematical research has concerned areas of enumerative combinatorics, particularly in relation to permutation classes.

Selected publications