Characteristics:

a. Rectangular and curvilinear forms arranged usually in dynamic, organic relationships, but with an over-all geometrical control to the composition.

b. Space usually treated three-dimesionally and often in vibrant, pulsating manner, reflecting the inward and outward tensions and thrusts of the forms within the space.

Origins: Cubism, Expressionism, Dada, Surrealism.

Lassaw: The Milky Way: A Polymorphic Space. 1950. Plastic metal, 51 1/2” high. Owned by the artist.

This was from the book Abstract Painting, Sculpture, America - The Museum of Modern Art, 1951.