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
The Austro-Hungarian Monarchy in Word and Picture The Austro-Hungarian Monarchy in Word and Picture The Austro-Hungarian Monarchy in Word and Picture or, as it is generally known, the Kronprinzenwerk ("Crown Prince's Work"), is a 24-volume encyclopedia of regional studies, initiated in 1883 by Crown Prince Rudolf of Austria-Hungary. The encyclopedia describes countries, peoples, landscapes and regions of the Austro-Hungarian Crown Lands. It was also published in a 21-volume Hungarian edition ("Az Osztrák-Magyar Monarchia írásban és képben"). The German edition was edited by the history and geography professor, Josef Weil von Weilen (1830-1889), while the Hungarian edition was edited by the novelist and dramatist Mór Jókai. Only the