FACTA UNIVERSITATIS SERIES MATHEMATICS AND INFORMATICS, Vol. 26, No. 1 (2011) Contents M. Darus and I. Faisal Differential subordination for meromorphic multivalent quasi-convex functions P. He The uniqueness theorem for meromorphic functions sharing a set S. Stanimirović A generalization of the Pascal matrix and its properties S. Ying, H. Chuangxia and L. Lanzhe Sharp maximal function and Morrey spaces estimates for multilinear commutator of singular integral operators with non-smooth kernels I.P. Stanimirović, M.Lj. Zlatanović and M.D. Petković On the linear weighted sum method for multi-objective optimization P.V. Protić Some remarks of medial grupoids