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
Professor D Professor D Damon Sajnani, better known by his stage name Professor D or ProfessorD.us is a Canadian rapper and assistant professor based in the United States. He is the lead vocalist of The Dope Poet Society and professor of African Cultural Studies at the University of Wisconsin - Madison where he teaches courses on Hip Hop and Politics in Africa and around the world. He was the inaugural Nasir Jones Hip Hop Fellow at the W.E.B. Du Bois Institute at Harvard University in 2014-15. He is known for rapping about social issues and global politics with sophisticated rhyme structures and