Five Indeterminate Lines is a dynamic sculptural work by French conceptual artist Bernar Venet, featuring bold, sweeping arcs of steel that appear to twist and surge through space in an unregimented, spontaneous manner. The work reflects Venet's longstanding exploration of mathematical and philosophical concepts, with the "indeterminate" nature of the lines suggesting forms that resist fixed definition or predictable order. The raw, industrial quality of the material contrasts with the expressive, almost gestural energy of the tangled curves, bridging the gap between rigorous conceptual thinking and visceral physical presence.