Reiner Ruthenbeck: Embracing Absence in Minimalist Sculpture Reiner Ruthenbeck (1937 – 2016) emerged from the fertile artistic landscape of post-war Germany, forging a distinctive path as both sculptor and conceptual artist. His early photographic explorations documented performances by prominent Fluxus artists and the Zero Group, capturing the spirit of experimental art in its nascent stages—a formative experience that cemented his c…