Issue 61A - Special issue in memoriam Pierre Leroux (1942-2008)

Preface

This issue is devoted to our dear Lotharingien PIERRE LEROUX whose untimely death on 9 March 2008 was a shock for all of us. It contains invited papers by friends and co-workers of his.

[B61Aa] Nantel Bergeron, Christophe Hohlweg, Carsten Lange and Hugh Thomas

Isometry Classes of Generalized Associahedra (13 pp.)

[B61Ab] Bruce E. Sagan

Probabilistic Proofs of Hook Length Formulas Involving Trees (10 pp.)