For Guild Hall curator Christina Strassfield, a show on minimalism was a no brainer. Currently on view in two large galleries, stark works in sand colors, geometrics, in brown felt material, in bright neon, the exhibition displays art from the collection of Bridgehampton resident Leonard Ruggio, whose passion is minimalism, a midcentury movement that challenges our notions of the types of materials can be used in art, and in fact our traditional notions of beauty.