Supersymmetric Grandunification: An Update

Abstract

Recent developments in supersymmetric unified theories are reviewed, with particular emphasis on supersymmetric grand unification and a brief discussion of recent ideas about extra dimensions.

Comments: 77 pages; four figures; Lectures presented at the Trieste summer school in July, 1999; UMD-PP-00-038; (parts of the article appeared before in the TASI97 lectures by the author); typos corrected and one reference added