The existence of what was conjectured by Russian mathematician Vladimir Arnold in 1995 and proven in 2006 by Hungarian scientists Gábor Domokos and Péter Várkonyi?
Gömböc, a type of convex 3 dimensional body A Gömböc is a convex three-dimensional homogeneous body which, when resting on a flat surface, has just one stable and one unstable point of equilibrium.
Which of these was an irregular unit of British Special Forces founded in Cairo in 1942 by Major Vladimir Peniakoff that served in the Western Desert during World War II?