Ilya Bolotowsky, Black Diamond, Screenprint, 1978 and the Golden Rectangle

Successive Golden Rectangles dividing a Golden Rectangle into squares (Black Diamond, Screenprint, 1978 by Ilya Bolotowsky).

Ilya Bolotowsky (Russian/American, 1907-1981) became a leading early 20th-century painter in abstract styles in New York City. His work, a search for philosophical order through visual expression, embraced Cubism and Geometric abstraction and was much influenced by Dutch painter Piet Mondrian.

Black Diamond, Screenprint, 1978. By 1950 Bolotowsky introduced circular and diamond-shaped canvases followed by ovals and other unusual rectangles.

Geometric abstract art is a form of abstract art based on the use of geometric forms sometimes, though not always, placed in non-illusionistic space and combined into non-objective (non-representational) compositions.

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A golden rectangle is a rectangle whose side lengths are in the golden ratio, one-to-phi, that is, approximately 1:1.618. A distinctive feature of this shape is that when a square section is removed, the remainder is another golden rectangle, that is, with the same proportions as the first. Square removal can be repeated infinitely, which leads to an approximation of the golden or Fibonacci spiral.