Anul XLIX 2004

S T U D I A

UNIVERSITATIS BABEŞ-BOLYAI

MATHEMATICA

4

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

SUMAR – CONTENTS – SOMMAIRE

E. Akalın and M. U. Akhmet, On the basic properties of discontinuous flows . . . . . . . . 3

Mira-Cristiana Anisiu, Two- and three-dimensional inverse problem

of dynamics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Claudia Bacoţiu, Smooth dependence of solution on parameters for the

Volterra-Fredholm integral equation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Petre Băzăvan, Periodic and quasiperiodic motion in the periodically forced

Rayleigh system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 33

F. Calio, E. Miglio, G. Moroni and M. Rasella, Integral λ−τ bivariate

spline operators in computer graphics problems . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 43

Zhao Changjian, Wing-Sum Cheung and Mihaly Bencze, On reverse

Hilbert type inequalities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Cristian Chifu-Oros, Uniqueness algebraic conditions in the study of second

order differential systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Cristina-Ioana Fătu, On the invariance property of the Fisher information (I) . .. . . . . 67

Cătălin Mitran, On some interpolation problem on triangle . . . . . . . . . . . . . . . . . . . . . 79

Gheorghe Oros, Georgia Irina Oros and Adriana Cătaş, A new differential

inequality II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

N. Ratiner, Holder estimates of higher order derivatives for evolutionary

Monge-Amp´ere equation on a Riemannian manifold . . . . . . . . . . . . . . . . . . . . . . . . . . 91

A. Soos, Fractional Brownian motion using contraction method in

probabilistic metric spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . 107

Sorin Mirel Stoian, Spectral radius of quotient bounded operator . . . . . . . . . . .. . . . .115

Book Reviews . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 127