Anul LII 2007

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

Petru Blaga and Octavian Agratini, Professor D.D.Stancu

at his 80th Birthday Anniversary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Alina Beian-Putura, On Certain Numerical Cubature Formulas for a Triangular Domain . . . . . 9

Petru Blaga and Gheorghe Coman, Some Problems on Optimal Quadrature . . . . . . . . . . . . 21

Ioana Chiorean, Remarks on Computing the Value of an Option with Binomial Methods . . . . . 45

Voichita Cleciu, Bernstein-Stancu Operators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Edith EGri and Ioan A. Rus, First Order iterative Functional-Differential Equation

with Parameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

I. Gavrea, On Bernstein-Stancu Type Operators. . . . . . . . . . . . . . . . . . . . 81

G. Mastroianni and D. Occorsio, Mean Convergence of Fourier Sums on Unbounded Intervals. . . 89

G. Mastroianni and J. Szabados, Polynomial Approximation on the Real Semiaxis

with Generalized Laguerre Weights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 105

Ion Mihoc and Cristina Fatu, The orthogonal principle and conditional densities . . . . . . . . . . . 129

G. Milovanovic and A. S. Cvetkovic, Logarithmic Modification of the Jacobi Weight Function ...143

Cristina Radu, A-Summability and Approximation of Continuous Periodic Functions . . . . .. . . 155

Book Reviews . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .163