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Otto Piene

While works by German-born Otto Piene (1928–2014), a pioneer of process art, have been on view lately in gallery and museum shows devoted to the Zero group, the short-lived avant-garde movement he cof…

Zero & Friends

Emerging in Düsseldorf in the 1950s and soon a trans-European phenomenon, Zero proclaimed the importance of light, movement and all things non-expressionist.