Le Matematiche  

C. D'Apice, T. Durante, A. Gaudiello

In this paper we analyze, in the context of a Lavrentieff phenomenon, the process of homogenization for Dirichlet problems.

Violeta Leoreanu

In this paper, the hypergroups, for which the heart is the set of identities, are studied.

Manuel A. Aguirre

See directly the article.

Margherita Roggero

Let C be an affine or projective smooth real algebraic curve, having a non-empty real part. Then every divisor E on C, which is linearly equivalent to its conjugate E^c , is also equivalent to a divisor supported on a set of real points of C.

Monika Herzog

In this paper we will study properties of Szasz-Mirakjan type operators A_n^? , B_n^ ? defined by modified Bessel function I_? . We shall present theorems giving a degree of approximation for these operators.

Giuseppe Devillanova, Fabrizio Pugliese

In this note we prove formula (1.1),which extends to functions in  W^{2,2}(O) with zero normal derivative the analogous formula (1.2) by G. Talenti ([5]) on functions with zero trace. To prove (1.1) we use the technique introduced by C. Miranda in [3... see more

Sebastiano Pennisi

A hyperbolic system with a convex extension is usually transformed in the symmetric form by taking the components of the main field as independent variables. However, the symmetric form can be obtained also in the original independent variables, which may... see more

Raúl Naulin

In this paper by using the notion of discrete dichotomies, an asymptotic representation of F, the fundamental matrix of the linear difference equation y(n + 1) = (A(n) + B(n))y(n) is given.

Paola Cavaliere, Maria Transirico, Mario Troisi

Following the stream of ideas in two recent papers ([1], [8]), one can establish a uniqueness result for the Dirichlet problem for a class of elliptic second order differential equations with discontinuous coefficients in unbounded domains of R^n , n = 3.

G. Dattoli, S. Lorenzutta, H. M. Svrivastava, A. Torre

The main object of this paper is to show that combined use of the Lagrange expansion and certain operational techniques allows to derive mixed generating functions of various families of generalized polynomials in a straightforward manner. Relevant connec... see more

Boris A. Kats

The present paper is dealing with an integral  over fractal non-rectifiable curve on the complex plane. In the introduction we observe its known indirect de?nitions. The Section 2 treats a direct definition, the existence theorems and some properties... see more

Anthony Sofo

This paper deals with the classical quest for "closed form" expressions of binomial sums and series. We shall consider a generalised Binomial sum and some relations and investigate several methods for its representation in closed form. In the process of o... see more

Marta Casanellas

In this paper we characterize non-connected Buchsbaum curves C in P^n and we give a sharp bound for the number of disjoint connected components of C.