Compositionally, White fills the plane with hard-edge geometric shapes. Allow your eyes to wander and you'll find that those flat shapes in flat colors do something unexpected: They begin to suggest pictorial space. Indeed it seems that the closer you are to the work, the deeper the space becomes. This is definitely what White is directing the composition to do. Personally I waver between wanting to see them as pure abstraction and allowing my eye to wander into their depths.