[see attached for complete text] {\it Singular Loci of Schubert
Varieties} is a unique work at the crossroads of representation theory,
algebraic geometry, and combinatorics. Over the past 20 years, many
research articles have been written on the subject in notable journals.
In this work, the authors have recreated and restructured the various
theories and approaches of those articles and present a clearer
understanding of this important subdiscipline of Schubert
varieties---namely singular loci. Key features of this work include: