Exhibition of the week Dalí/Duchamp A fascinating trip to the most exciting era of modern art in the company of its two greatest entertainers, this exhibition showcases the best of Dalí and the genius of Duchamp. • Royal Academy, London, 7 October to 3 January Also showing Arp: The Poetry of Forms Hans, or Jean, Arp was one of the great originals of 20th-century art. His playful creations exist in their own world somewhere between surrealism and abstract art and communicate pure freedom. • Turner Contemporary, Margate, 13 October to 14 January Jake & Dinos Chapman Still crazy for Goya after all these years, the Chapmans excavate new horrors and humour from the great Spanish artist’s etchings. • BlainSouthern, London, 4 October to 11 November
Gary Hume This unpredictable and often brilliant painter continues his explorations of the banal and the beautiful. • Spruth Magers, London, until 23 December Torbjørn Rødland The strange sensual photographs of this LA-based Norwegian are surreal and fun. Serpentine Sackler Gallery, London, until 19 November
Masterpiece of the week A Satyr Mourning Over a Nymph (1485) by Piero di Cosimo |