When not climbing in the Alps, open water swimming in the Mediterranean, or racing a carbon fiber Pinarello, I am an applied mathematician, geographic information systems scientist and lecturer at Johns Hopkins University. I also teach courses in the history and foundations of GIS at University College London and at Sorbonne Université - Campus Pierre et Marie Curie, in Paris.

I am the founder of GeoFoundry AI, where we are using renormalization group methods to study the underlying mathematics of deep and machine learning for GeoAI, and are attempting to formalise the logical and algebraic foundations of GIS using mereotopology and category theory.

The GeoFoundry is also involved in several long term software and digital archaeology conservation projects that center on reconstructing the code of the Simulmatics Corporation, who revolutionized computational election and voting trend analysis in the 1960s, and on preserving materials from the early use of computers in the making of Congressional district maps.

The author or editor of more than one hundred articles and books, including the New York Times selection, MAP: Exploring the World , I am now trying to turn a mess of mathematical course notes into the forthcoming book, The Algebra of Space: Lectures on Mereotopology, Category Theory and the Ontological Foundations of Geographic Information Science.

Interested in the origins and metaphysical foundations of point-free geometries and region based topologies for GIS, I am also working on a mathematical commentary on Alfred North Whitehead’s 1916, La Theorie Relationniste de L’Espace and William Lawvere's 1992, Categories of Space and Quantity.

My latest articles, To save lives: lessons of a pandemic cartographer was published in the Transactions of the Institute of British Geographers, and Mapping the Last Pool of Darkness: a Tribute to Cartographer Tim Robinson (1935-2020), appeared in the The Portolan.

A Fellow of the Royal Geographical Society (FRGS), I find being close to the gentle hum of supercomputers, pondering the mathematical knots of topos theory, and exploring the deep labyrinths of the renormalization group, strangely comforting.

I currently live in Nice, France.