Invisible Cities A Book by Italo Calvino www.goodreads.com An evening identical to thisAlready memoriesLike the lines of a handThe eye does not seeIn every skyscraper+14 More Burglary's White Whale125 Best Architecture Books urbanism
Fragments of time A Quote by Italo Calvino Long novels written today are perhaps a contradiction: the dimension of time has been shattered, we cannot live or think except in fragments of time each of which goes off along its own trajectory and immediately disappears. Understanding Architecture timewritingattention
Wang tiles Wang tiles (Hao Wang, 1961) are a class of formal systems. They are modelled visually by square tiles with a color on each side. A set of such tiles is selected, and copies of the tiles are arranged side by side with matching colors, without rotating or reflecting them. The basic question about a set of Wang tiles is whether it can tile the plane or not, i.e., whether an entire infinite plane can be filled this way. The next question is whether this can be done in a periodic pattern. In 1966, Wang's student Robert Berger solved the problem in the negative. He proved that no algorithm for the problem can exist, by showing how to translate any Turing machine into a set of Wang tiles that tiles the plane if and only if the Turing machine does not halt. The undecidability of the halting problem then implies the undecidability of Wang's tiling problem. Wikipedia en.wikipedia.org Truchet TilesThe Tiling Patterns of Sebastien Truchet and the Topology of Structural Hierarchy mathalgorithms