Anul LIII 2008

S T U D I A

UNIVERSITATIS BABEŞ-BOLYAI

MATHEMATICA

3

Redacţia: 400084 Cluj-Napoca, Str. M. Kogălniceanu nr. 1 Tel: 405300

SUMAR �CONTENTS �SOMMAIRE

B. Benabderrahpmane, B. Nouiri and Y. Boukhatem, Index of the Elasticity Operator

With Contact Without Friction Boundary Conditions . . . . . . . . . . . . . . . . . . . . . . . ..... . . . . . . 3

T. Groşan, S.R. Pop and I. Pop, Radiation and Variable Viscosity Effects in Forced

Convection from a Horizontal Plate Embedded in a Porous Medium . . . . . . . . . . .. . . . . . . 13

Tiberiu Ioana and Titus Petrila, Numerical Method for Free Surface

Viscous Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........... . . . . . . . . 25

Ildiko Ilona Mezei, Multiplicity Solutions for a Double Eigenvalue Elliptic Problem

in Double Weighted Sobolev Spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . 33

Alexandru I. Mitrea, Approximation Procedures in Connection With

a Problem of Sturm-Liouville Type . . . . . . . . . . . . . . . . . . . . . . . . . . .................... . . . . . . . . . . 49

Mohammad Sal Moslehian and Abolfazl Niazi Motlagh, Some Notes on

(σ, τ)-Amenability of Banach Algebras . . . . . . . . . . . . . . . . . . . . . . . . . . .... . .. . ... ........ . . . . 57

Veronica Oana Nechita, On Some Classes of Analytic Functions Defined

by a Multiplier Transformation . . . . . . . . . . . . . . . . . . . . . . . . . . .................. . . . . . . . . . . . . . . 69

Tidarut Plienpanich, Filtering for Stochastic Volatility from Point Process Observation . . 75

Daniel N. Pop, Approximation of Solution of Second Order Differential Equations With

Conditions Inside the Interval (0, 1) Using Cubic B-Spline Functions . .. . . . . . . . . . . . . . . . 89

S. Popa, D. Stanescu and S.S. Wulff, Numerical Generation of

Symmetric α-Stable Random Variables . . . . . . . . . . . . . . . . . . . . . . . . .................. . . . . . . . 105

Adnan Yassine, Comparative Study Between Lemke� Method and the Interior

Point Method for the Monotone Linear Complementary Problem . . . . . . ............................119

Book Reviews . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133