Vol. 63, No. 1, 2006 · Contents

Célia Moreira:
Singularities of optimal averaged profit for stationary strategies

Radouan Morchadi and Saïd Sajid:
A viability result for a first-order differential inclusion

Zhiting Xu:
Averaging technique and oscillation for even order damped delay differential equations

Pigong Han:
Solutions for singular critical growth Schrödinger equations with magnetic field

George Dinca, Daniel Goeleven and Daniel Pasca:
Duality mappings and the existence of periodic solutions for non-autonomous second order systems

Delphine Boucher:
Non complete integrability of a satellite in circular orbit

Olga Panova:
Real Gelfand--Mazur algebras

Edoardo Ballico:
On the non-defectivity and non weak-defectivity of Segre--Veronese embeddings of products of projective spaces

P. Amster and P.P. Cárdenas Alzate:
Existence of solutions for some nonlinear beam equations