Named for the 19th century mathematician Bernhard Riemann, who propelled geometry into realms of abstraction, Riemann surfaces are complex doughnuts and pretzels characterized topologically according to the number of «handles» they possess. (sciencemag.org)
It features seven artists and composers — Louise Bourgeois, John Cage, Morton Feldman, Philip Guston, Franz Kline, Joan Mitchell and David Smith — all of whom pushed the boundaries of their respective mediums to new realms of abstraction. (artbook.com)
Ethel Schwabacher's big red Antigone I (1958), for example — the first painting seen upon entering the exhibition — is a riot of offbeat color juxtapositions and tightly wrought gesticulation that carries the dramatic conflict of the classical tragedy beyond its narrative and into the wide - open realm of abstraction. (brooklynrail.org)