Rubik's family cubes of all sizes Rubik's family cubes of all sizes The original Rubik's cube was a mechanical 3×3×3 cube puzzle invented in 1974 by the Hungarian sculptor and professor of architecture Ernő Rubik. Extensions of the Rubik's cube have been around for a long time and come in both hardware and software forms. The major extension have been the availability of cubes of larger size and the availability of the more complex cubes with marked centres. The properties of Rubik’s family cubes of any size together with some special attention to software cubes is the main focus of this article. Many properties are mathematical
John Marshall (sculptor) In Europe he has had shows in Milan, Pisa, Florence, Copenhagen, Geneva and Zurich. His work is in numerous collections, many of which are monumental commissions: public and private in this country and internationally. He recently retired professor emeritus from teaching after almost 30 years as director of 3-D Studies at Keene State College, prior to which he had taught at the schools of Art and Architecture at Yale, the New School for Social Research and Manhattanville College. He had studios in Keene, New Hampshire, and Carrara, Italy. John Marshall (sculptor) John "Jack" Marshall was an American artist best known