am recently retired as the College's Applied Maths Tutor, giving
tutorials in physical applied mathematics such as mechanics, waves and
diffusion, quantum mechanics and special relativity, also in central subjects
like differential equations and in pure subjects like differential or projective
geometry, and lecturing on the same subjects.
I am co-author of two books at the level of graduates or advanced undergraduates, based on lecture courses which I have given in general relativity and in twistor theory.
an Emeritus Research Fellow I am part of the mathematical physics group in the
Mathematical Institute. My research continues to be in various
branches of differential geometry, particularly where it meets physics in
Einstein's theory of general relativity. I was a D.Phil. student of Sir Roger
Penrose and have worked extensively on twistor theory and on Penrose's
Conformal Cyclic Cosmology.