Marcel Duchamp’s Experimental Geometry 1983 by Princeton University Press mathematics, geometry, non-Euclidean geometry, Marcel Duchamp http://members.iif.hu/visontay/ponticulus/britannicus/unhappy.html One of Duchamp’s last specific comments on geometry was hisUnhappy Readymade of 1919. At the time of the marriage of his sister, Suzanne, to Jean Crotti, the artist sent instructions to the couple in Paris to suspend a geometry book by strings on their balcony. Duchamp later described the intended results: “The wind had to go through the book, choose its own problems, turn and tear out the pages… It amused me to bring the idea of happy and unhappy into readymades, and then the rain, the wind, the pages flying, it was an amusing idea.”* *Duchamp, as quoted in Cabanne, Dialogues, p. 61
