Encoding recursion in the Lambda calculus, one of Professor Graham Hutton's favourite functions. Lambda Calculus: Professor Brailsford on 'Pointers': Coming Soon! Many thanks to Microsoft Research UK for their support with the 'Essentials' mini-series. This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: Computerphile is a sister project to Brady Haran's Numberphile. More at