“Electric Ladyland,” the title of curator Hamza Walker’s essay for Anne-Mie Van Kerckhoven’s recent exhibition at the Renaissance Society, is a spot-on nickname for “In a Saturnian World,” the Belgian artist’s latest and nearly unnavigable gaping opus. “Electric Ladyland” also befits Van Kerckhoven’s background as a trained graphic artist who since 1981 has been both an active member of Antwerp’s experimental-music scene and someone who has long embraced an array of visual languages in the studio to explore various polemical, philosophical positions. The characterization of “electric” also