Our papers are the official record of our discoveries. They allow others to build on and apply our work. Each paper is the result of many months of research, so we make a special effort to make them clear, beautiful and inspirational, and publish them in leading journals.
Parallels between the perfect and abundant numbers and their recursive analogs point to deeper structure in the recursive divisor function.
Recursively divisible numbers are a new kind of number that are highly divisible, whose quotients are highly divisible, and so on.
A theoretical model of recursive innovation suggests that new technologies are recursively built up from new combinations of existing ones.
Hamming balls, subgraphs of the hypercube, maximise the graph’s largest eigenvalue exactly when the dimension of the cube is large enough.
An iterative version of a method to identify hierarchies and rankings of nodes in directed networks can partly overcome its resolution limit.
In systems of innovation, the relative usefulness of different components changes as the number of components we possess increases.
A random analogue of the Erdős-Ko-Rado theorem sheds light on its stability in an area of parameter space which has not yet been explored.
The information needed to self-assemble a structure quantifies its modularity and explains the prevalence of certain structures over others.
In single elimination competition the best indicator of success is a player's wealth: the accumulated wealth of all defeated players.