This article is part of an ongoing project aiming at the connections between causal structures on homogeneous spaces, Algebraic Quantum Field Theory, modular theory operator algebras and unitary representations Lie groups. In this we concentrate non-compactly symmetric spaces G/H. class contains de Sitter space but also other with invariant partial ordering. The central ingredient Euler element...

Born at Weston-super-Mare on the 25th May 1893, where his father was in business, he received his early education at Brynmellan School. From here in 1908 he entered the Medical School of the University College of Bristol, the year prior to the University receiving its charter. The Medical School was then situated in Tyndalls Park. A natural athlete, he played football, tennis and represented Gl...