Matemàtiques i Informàtica: Enviaments recents
Ara mostrant els elements 201-220 de 1007
The Fundamental Theorem of Algebra before Carl Friedrich Gauss
This is a paper about the first attempts of the demonstration of the fundamental theorem of algebra. Before, we analyze the tie between complex numbers and the number of roots of an equation of -n-th degree. In second ...
A hybrid multi-start metaheuristic scheduler for astronomical observations
In this paper, we investigate Astronomical Observations Scheduling which is a type of Multi-Objective Combinatorial Optimization Problem, and detail its specific challenges and requirements and propose the Hybrid Accumulative ...
On the dimension of Voisin sets in the moduli space of abelian varieties
We study the subsets $V_k(A)$ of a complex abelian variety $A$ consisting in the collection of points $x \in A$ such that the zero-cycle $\{x\}-\left\{0_A\right\}$ is $k$-nilpotent with respect to the Pontryagin product ...
On invariant rank two vector bundles on $\mathbb{P}^2$
In this paper we characterize the rank two vector bundles on $\mathbb{P}^2$ which are invariant under the actions of the parabolic subgroups $G_p:=\operatorname{Stab}_p(\mathrm{PGL}(3))$ fixing a point in the projective ...
Irreducibility of the moduli space of orthogonal instanton bundles on Pn
In order to obtain existence criteria for orthogonal instanton bundles on $\mathbb{P}^n$, we provide a bijection between equivalence classes of orthogonal instanton bundles with no global sections and symmetric forms. Using ...
Grab, Pay, and Eat: Semantic Food Detection for Smart Restaurants
The increase in awareness of people toward their nutritional habits has drawn considerable attention to the field of automatic food analysis. Focusing on self-service restaurants environment, automatic food analysis is not ...
Resolución mediante aproximaciones sucesivas de un problema de contorno en un tipo de ecuaciones diferenciales de cuarto orden
El presente trabajo trata de la resolución de un problema de contorno en un tipo de ecuaciones diferenciales lineales y homogéneas de cuarto orden, con dos parámetros independientes, en el que el coeficiente de la variable ...
Consideraciones sobre cuerpos ordenados y cuerpos reales maximales
El presente trabajo se puede considerar como prolongación del trabajo (I) del autor, se amplía un resultado de este último que era válido sólo en el caso metrizable, y aquí se estudia el caso general; se hace un estudio ...
Interpolating and sampling sequences in finite Riemann surfaces
We provide a description of the interpolating and sampling sequences on a space of holomorphic functions on a finite Riemann surface, where a uniform growth restriction is imposed on the holomorphic functions.
A semi-empirical model for scatter field reduction in digital mammography
X-ray mammography is the gold standard technique in breast cancer screening programmes. One of the main challenges that mammography is still facing is scattered radiation, which degrades the quality of the image and ...
Klyachko diagram of monomial ideals
In this paper, we introduce the notion of a Klyachko diagram for a monomial ideal I in a certain multi-graded polynomial ring, namely the Cox ring $R$ of a smooth complete toric variety, with irrelevant maximal ideal B. ...
Tongues in degree 4 Blaschke products
The goal of this paper is to investigate the family of Blasche products B_a , which is a rational family of perturbations of the doubling map. We focus on the tongue-like sets which appear in its parameter plane. We first ...
Children Building and Having Fun While They Learn Geometry
Geometry is a basic discipline in STEM education. Recent educational reports, however, suggest that geometry is one of the subjects that sees the lowest levels of performance in the math curriculum. This paper presents a ...
On Lp solutions to the Laplace equation and zeros of holomorphic functions
The problem we solve in this paper is to characterize, in a smooth domain $\Omega$ in $\mathbb{R}^{n}$ and for $1 \leq p \leq \infty,$ those positive Borel measures on $\Omega$ for which there exists a subharmonic function ...
Singularities of inner functions associated with hyperbolic maps
Let $f$ be a function in the Eremenko-Lyubich class $\mathscr{B}$, and let $U$ be an unbounded, forward invariant Fatou component of $f$. We relate the number of singularities of an inner function associated to ...
Joining polynomial and exponential combinatorics for some entire maps
We consider families of entire transcendental maps given by Fλ,m(z) = λzm exp(z) where m ≥ 2. All these maps have a superattracting fixed point at z = 0 and a free critical point at z = −m. In parameter planes we focus on ...
On modular forms and the inverse Galois problem
In this article new cases of the inverse Galois problem are established. The main result is that for a fixed integer $ n$, there is a positive density set of primes $ p$ such that $ \mathrm{PSL}_2(\mathbb{F}_{p^n})$ occurs ...
Reverse Carleson measures in Hardy spaces
We give a necessary and sufficient condition for a measure $\mu$ in the closed unit disk to be a reverse Carleson measure for Hardy spaces. This extends a previous result of Lefèvre, Li, Queffélec and Rodríguez-Piazza ...
Carleson Measures and Logvinenko-Sereda sets on compact manifolds
Given a compact Riemannian manifold $M$ of dimension $m \geq 2$, we study the space of functions of $L^2(M)$generated by eigenfunctions of eigenvalues less than $L \geq 1$ associated to the Laplace-Beltrami operator on ...
Cardiometabolic risk estimation using exposome data and machine learning
Background: The human exposome encompasses all exposures that individuals encounter throughout their lifetime. It is now widely acknowledged that health outcomes are influenced not only by genetic factors but also by the ...
