**TOME 55 (103), No. 1, 2012****S.M. Buckley and K. Falk :**Rough CAT(0) spaces, p. 3-33**Mircea Cimpoeaş :**The Stanley conjecture on monomial almost complete intersection ideals, p. 35-39**Sharief Deshmukh :**Jacobi-type vector fields on Ricci solitons, p. 41-50**Emrah Kilic, Ilker Akkus and Hideyuki Ohtsuka :**Some Generalized Fibonomial Sums related with the Gaussian q-Binomial sums, p. 51-61**Amir Mafi :**On the Annihilation of local homology modules, p. 63-67**Florin Stan and Alexandru Zaharescu :**The Siegel norm of algebraic numbers, p. 69-77**Amadou Tall :**A generalization of the Lucas addition chains, p. 79-93**Wang Tingting and Zhang Wenpeng :**Some identities involving Fibonacci, Lucas polynomials and their applications, p. 95-103