Lobachevsky wrote Pangeometry in 1855, the year before his death. This memoir is a resume of his work on non-Euclidean geometry and its applications and can be

How psychological ideas of space have profoundly affected architectural and artistic expression in the twentieth century. Beginning with agoraphobia and claustr

Examines various attempts to prove Euclid's parallel postulate -- by the Greeks, Arabs and Renaissance mathematicians. Ranging through the 17th, 18th, and 19th

"The artist and architect El Lissitzky (1890-1941) is celebrated for his contributions to painting, architecture, photography, and graphic design, and for his r

Examines various attempts to prove Euclid's parallel postulate -- by the Greeks, Arabs and Renaissance mathematicians. It considers forerunners and founders suc