He is also interested in analytic aspects of quasiconformal mappings, sub-Riemannian geometry and geometric flows. More recently, he has pursued projects in machine learning, aimed at using neural ...
Math. Phys. 45 (2004), 4141-4163 (with R. G. McLenaghan and D. The) An extension of the classical theory of algebraic invariants to pseudo-Riemannian geometry and Hamiltonian mechanics, J. Math. Phys.