Matemàtiques i Informàtica: Recent submissions
Now showing items 181-200 of 1007
Small Hankel operators on generalized weighted Fock spaces
In this work we characterize the boundedness, compactness and membership in the Schatten class of small Hankel operators on generalized weighted Fock spaces $F^{p,\ell}_\alpha(\omega)$ associated to an $\mathcal{A}^\ell_p$ ...
Sumsets and Veronese varieties
In this paper, to any subset $\mathcal{A} \subset \mathbb{Z}^n$ we explicitly associate a unique monomial projection $Y_{n, d_{\mathcal{A}}}$ of a Veronese variety, whose Hilbert function coincides with the cardinality of ...
Un recíproco de un teorema de A. Wilansky
In this paper, we try to state a reciprocal of . a result of A. Wilansky : The dual of a Mazur space, provided with the topology of convergence on null sequences, is complete. Until now, we have proved this converse when ...
Cage Active Contours for image warping and morphing
Cage Active Contours (CACs) have shown to be a framework for segmenting connected objects using a new class of parametric region-based active contours. The CAC approach deforms the contour locally by moving cage's points ...
Building uncertainty models on top of black-box predictive APIs
With the commoditization of machine learning, more and more off-the-shelf models are available as part of code libraries or cloud services. Typically, data scientists and other users apply these models as ''black boxes'' ...
Localizations of abelian Eilenberg-Mac Lane spaces of finite type
We prove that every homotopical localization of the circle $S^{1}$ is an aspherical space whose fundamental group $A$ is abelian and admits a ring structure with unit such that the evaluation map End $(A) \rightarrow A$ ...
Plectic $p$-adic invariants
For modular elliptic curves over number fields of narrow class number one, and with multiplicative reduction at a collection of $p$-adic primes, we define new $p$-adic invariants. Inspired by Nekováŕ and Scholl's plectic ...
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 ...
On projective varieties of minimal degree
let IP" be thc u-dimensional projcctive spacc over an algebraically closcd field. We consider rcduced equidimensionaJ projcctivc algebraic varieties V = VI U .. . U V r \pn , not contained in any hyperplane (unless ...
Multipliers and weighted estimates for the $\bar\partial$-equation
We study estimates for the solution of the equation $\bar{\partial} u=f$ in one variable. The new ingredient is the use of holomorphic functions with precise growth restrictions in the construction of explicit solutions ...
Monomial ideals, almost complete intersections and the Weak lefschetz Property
Many algebras are expected to have the Weak Lefschetz property, although this is often very difficult to establish. We illustrate the subtlety of the problem by studying monomial and some closely related ideals. Our results ...
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.
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 ...
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 ...
Geometric conditions for multiple sampling and interpolation in the Fock space
We study multiple sampling, interpolation and uniqueness for the classical Fock spaces in the case of unbounded multiplicities. We show that there are no sequences which are simultaneously sampling and interpolating when ...
On connectivity of Julia sets of transcendental meromorphic maps and weakly repelling fixed points I
It is known that the Julia set of the Newton's method of a non- constant polynomial is connected ([18]). This is, in fact, a consequence of a much more general result that establishes the relationship between simple ...
Probability-based Dynamic Time Warping and Bag-of-Visual-and-Depth-Words for Human Gesture Recognition in RGB-D
We present a methodology to address the problem of human gesture segmentation and recognition in video and depth image sequences. A Bag-of-Visual-and-Depth-Words (BoVDW) model is introduced as an extension of the ...
On a local-global principle for quadratic twists of abelian varieties
Let $A$ and $A^{\prime}$ be abelian varieties defined over a number field $k$ of dimension $g \geq 1$. For $g \leq 3$, we show that the following local-global principle holds: $A$ and $A^{\prime}$ are quadratic twists of ...
