期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; ()
In this paper we consider the eigenvalues of time-harmonic Maxwell's equations in an electromagnetic cavity subject to a regular variation of the doma......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; ()
In this article, we extend Kluvanek-Lewis-Henstock thegral theory in associate with X-valued measure of [4]. We investigate some properties and conver......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; 16 (2)
We consider quadratic Weyl sums S-N (x; c, alpha a) = Sigma(N)(n=1) exp {2 pi i ((1/2n(2) + cn)x + alpha n)} for c = alpha = 0 (the rational case) or ......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; ()
Necessary and sufficient conditions are obtained for the generalized-homogeneous or common polynomial P to be more powerful then the generalized-homog......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; ()
The third string bordism group Bord( 3)(String) is known to be Z/24Z. Using Waldorf's notion of a geometric string structure on a manifold, Bunke-Naum......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; ()
We study the problem of correct solvability in the space L-p(R), p is an element of [1,infinity)of the equation-(r(x)y '(x))' + q(x)y(x) = f(x), x is ......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; ()
This paper investigates G. Fano's contributions to the study of three-dimensional varieties-the so called Fano threefolds-starting from unpublished ma......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; 16 (3)
Graph theory proved to be a quite powerful mathematical tool to model several problems in a discrete setting. In this paper the authors illustrate how......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; 16 (2)
We review the results obtained in Gianfelice et al. (Commun Math Phys 313:745-779, 2012) and Gianfelice and Vaienti (J Stat Phys 181(1):163-211, 2020)......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; 16 (3)
In this paper, we prove a generalized version of the Darbo-Sadovskii fixed point theorem in Busemann spaces and as an application, we prove the famous......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; ()
In this work we compute the numerical solution of the Exner model of sedimentation when a train of waves is imposed at the inflow boundary (E. Macca i......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; ()
The purpose of this article (composed of two parts) is the study of the generalized dispersal operator of a reaction-diffusion equation in L-p-spaces ......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; 16 (2)
We propose a relaxed notion of shadowing. In particular, for a homeomorphism f on a metric space, we ask whether every approximate orbit is near some ......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; ()
We consider the volume potential associated with the heat operator and we prove a mapping property in the space of distributions which are the time de......
期刊： BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 2023; 16 (2)
Perturbative methods have been developed and widely used in the XVIII and XIX century to study the behavior of N-body problems in Celestial Mechanics.......
