PRESIDENTIAL ADDRESS
Nigel Hitchin A lecture on the octahedron 577
PAPERS
Horst Alzer On Ramanujan's double inequality for the gamma function 601 Meinolf Geek On the induction of Kazhdan-Lusztig cells 608 Akira Kono and Osamu Nishimura Characterization of the mod 3 cohomology
of the compact, connected, simple, exceptional Lie groups of rank 6 615 P. M. Gartside and R. W. Knight Ubiquity of free subgroups 624 Cai Heng Li and Akos Seress The primitive permutation groups of squarefree
degree 635 Pekka Koskela and Timo Tossavainen Pathwise connectivity of a conformal
boundary 645 Cho-Ho Chu and Tuan Giao Vu A Liouville theorem for matrix-valued harmonic
functions on nilpotent groups 651 Eloisa Detomi and Andrea Lucchini Recognizing soluble groups from their
probabilistic zeta functions 659 Abel Castorena Minimizing volumes of Ka'hler manifolds of codimension one 665 M. Frigon and D. O'Regan Fixed points of cone-compressing and cone-
extending operators in Frechet spaces 672 Yi Wang and Xiao-Qiang Zhao Convergence in monotone and subhomo-
geneous discrete dynamical systems on product Banach spaces 681 Jeong Hee Hong and Wojciech Szymariski Purely infinite Cuntz-Krieger
algebras of directed graphs 689 G. J. Murphy Primitivity conditions for full group C*-algebras 697 Vladimir Shpilrain and Jie-Tai Yu Factor algebras of free algebras: on a
problem of G. Bergman 706 BOOK REVIEWS (listed on page 720) 711
