HACETTEPE JOURNAL OF MATHEMATICS AND STATISTICS, cilt.50, sa.6, ss.1679-1680, 2021 (SCI-Expanded, Scopus, TRDizin)
The main aim of this work is to give a case-free algebraic proof for a theorem of Eng on the Poincare polynomial of parabolic quotients of finite Coxeter groups evaluated at-1.