DIAS-STP-01-13 On a Unimodal Conjecture in Matroid Theory. W.M.B. Dukes This preprint is available for download : Portable Document Format (Size: 180K) Postscript (Size: 592K) To obtain copies of any of the preprints in the archives, please contact us and specify the preprint number(s), author(s), title(s) and number of copies wanted.