From The Cambridge Companion to Wallace Stevens ,
John N. Serio, ed., "Stevens's Late Poetry," by B.J. Leggett,
pp. 62-75, an excerpt from page 70:
Click the above image for further details.
See also Nothingness and "The Rock" in this journal.
Further readings along these lines:
For pure mathematics, rather than theories of the physical world,
see the properties of the cube illustrated on the second (altered)
book cover above.