Obstruction

A missing object, recreated by Man Ray in 1947. “An object comprising 63 coat hangers, mathematically hooked to one another, as they consist of equations: they are hooked so as to form an arithmetical progression; firstly, one; then, on each side, another, which adds to two and, on these, two more, which adds up to four; then, eight, as so on up to the sixth row having 32, totaling 63 hangers! I could place many more of them, until they fully took up the gallery, but thus, there would be no way to come in there and see the pictures hanging, and this is logically called Obstruction”.