Cube (algebra) however, easy to show that most numbers are not perfect cubes because "all" perfect cubes must have digital root 1, 8 or 9. That is their values modulo 9 may be only −1, 1 and 0. Moreover, the digital root of any number's cube can be determined by the remainder the number gives when divided by 3: Every positive integer can be written as the sum of nine (or fewer) positive cubes. This upper limit of nine cubes cannot be reduced because, for example, 23 cannot be written as the sum of fewer than nine positive cubes: The equation has
Autonomy Cube the Condensation Cube. It similarly consisted of a plexiglass cube, but which contained water which would move through different states of liquid to gas. Paglen also states he wants to raise the question: "What would a more civic-minded version of the Internet look like? What could the Internet look like if the Internet hadn't been turned into the greatest means of mass surveillance in the history of humanity?" Autonomy Cube The Autonomy Cube is an art project run by American artists and technologists Trevor Paglen and Jacob Appelbaum which places Tor-relays in traditional art museums. Both have previously created art