United Nations Educational Scientific and Cultural Organization and International Atomic Energy Agency THE ABDUS SALAM INTERNATIONAL CENTRE FOR THEORETICAL PHYSICS A CLASSIFICATION OF TWO-DIMENSIONAL HYPOREDUCTIVE TRIPLE ALGEBRAS

United Nations Educational, Scientific and Cultural Organization and International Atomic Energy Agency THE ABDUS SALAM INTERNATIONAL CENTRE FOR THEORETICAL PHYSICS INFRARED ABSORPTION OF MgO AT HIGH PRESSURES AND TEMPERATURES: A MOLECULAR DYNAMIC STUDY

United Nations Educational Scientific and Cultural Organization and International Atomic Energy Agency THE ABDUS SALAM INTERNATIONAL CENTRE FOR THEORETICAL PHYSICS THE INFLUENCE OF TiO2 POLYMORPH, MECHANICAL MILLING AND SUBSEQUENT SINTERING ON THE FORMATION OF Ti-SUBSTITUTED SPINEL-RELATED Li0.5Fe2.5O4

United Nations Educational Scientific and Cultural Organization and International Atomic Energy Agency THE ABDUS SALAM INTERNATIONAL CENTRE FOR THEORETICAL PHYSICS THE GENERALIZED MODEL OF POLYPEPTIDE CHAIN DESCRIBING THE HELIX-COIL TRANSITION IN BIOPOLYMERS

United Nations Educational, Scientific and Cultural Organization and International Atomic Energy Agency THE ABDUS SALAM INTERNATIONAL CENTRE FOR THEORETICAL PHYSICS SOME RESULTS ON THE ASYMPTOTIC BEHAVIOUR OF HYPERBOLIC SINGULAR PERTURBATIONS PROBLEMS

Anisotropic singular perturbations of linear hyperbolic problems are considered. A description of the asymptotic behaviour of the solution as ε → 0 is given. In the case of cylindrical domains, we improve the rate of convergence in regions far from the lateral boundary.

IC/98/108 United Nations Educational Scientific and Cultural Organization and International Atomic Energy Agency THE ABDUS SALAM INTERNATIONAL CENTRE FOR THEORETICAL PHYSICS RANDOM FIXED POINTS OF SET-VALUED MAPS

Some random fixed point theorems for set-valued random operators under very mild conditions are established. Some recent results of O'Regan ([Proc. Amer. Math. Soc. 126 (1998), 3045-3053] and [Computers Math. Applic. 35 (1998), 27-34]) are improved significantly. The discussion in this paper underlines, in addition to generality, the unifying aspects of our result.