Modular constructivism is a style of sculpture that emerged in the 1950s and 1960s and was associated especially with Erwin Hauer and Norman Carlberg.
Designing these structures involves intensive study of the combinatorial possibilities of sometimes quite curvilinear and fluidly shaped modules, creating a seamless, quasi-organic unity that can be either rounded and self-enclosed, or open and potentially infinite.
The latter designs have proved useful and attractive for use in eye-catching architectural walls and screens, often featuring complex patterns of undulating, tissue-like webbing, with apertures which transmit and filter light, while generating delicate patterns of shadow.
Writing in Architecture Week (August 4, 2004), Hauer explains that "Continuity and potential infinity have been at the very center of my sculpture from early on."
[1] Hauer made an extensive study of biomorphic form, especially what he calls "saddle surfaces," which combine convex and concave curvature and thus allow for smooth self-combination, sometimes in multiple dimensions.