Anul LIII 2008

S T U D I A

UNIVERSITATIS BABEŞ-BOLYAI

MATHEMATICA

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

SUMAR – CONTENTS – SOMMAIRE

Gheorghe Atanasiu and Monica Purcaru, Some Results on Transformations

Groups of n-Linear Connections in the 2-Tangent Bundle .......................................................................3

Mihail Megan and Codruţa Stoica, Exponential Instability of SkewEvolution Semiflows

in Banach Spaces................................................................................................................................. 17

Abdelbaki Merouani and Sedik Djabi, Monotony Method in Quasistatic Processes

for Viscoplastic Materials.....................................................................................................................25

Toufik Moussaoui and Radu Precup, Radial Solutions for Some Classes

of Elliptic Boundary Value Problems ....................................................................................................35

ChunGil Park and Themistocles M. Rassias, Homomorphisms Between

JC∗-Algebras....................................................................................................................................43

Virgil Pescar, On Some Integral Operators which Preserve the Univalence ...................................57

Petrica C. Pop, Christos D. Zaroliagis and G. Hadjicharalambous, A Cutting

Plane Approach to Solve the Railway Traveling Salesman Problem ......................................................63

Bapuji Pullepul, J. Ekambavanan and I. Pop, Transient Laminar Free

Convection from Vertical Cone with NonUniform Surface Heat Flux .....................................................75

Alexandru Roşoiu and Dragoş Frăţilă, On the Lipschitz Extension Constant for

Complex Valued Lipschitz Function .................................................................................................... 101

Ioan Teleaga and Jens Lang, Higher-Order Linearly Implicit One-Step Methods for

Three-Dimensional Incompressible Navier-Stokes Equations ................................................................109

Book Reviews................................................................... ................................................................. 123