Matemàtiques i Informàtica: Recent submissions
Now showing items 81-100 of 1007
Asymptotically optimal designs on compact algebraic manifolds
We find $t$-designs on compact algebraic manifolds with a number of points comparable to the dimension of the space of polynomials of degree $t$ on the manifold. This generalizes results on the sphere by Bondarenko, Radchenko ...
Waste management using an automatic sorting system for carrot fruit based on image processing technique and improved deep neural networks
In this study, we address the problem of classification of carrot fruit in order to manage and control their waste using improved deep neural networks. In this work, we perform a deep study of the problem of carrot ...
On the Weak Lefcchetz property for artinian Gorenstein algebras
We study the problem of whether an arbitrary codimension three graded artinian Gorenstein algebra has the Weak Lefschetz Property. We reduce this problem to checking whether it holds for all compressed Gorenstein algebras ...
Anillos conmutativos cuyas extensiones enteras verifican la propiedad de 'going-between'
Let A and B denote commutative rings. We say that ACB satisfies going-between if iliven prime ideals...
Reproducing kernel estimates, bounded projections and duality on large weighted Bergman spaces
We obtain certain estimates for the reproducing kernels of large weighted Bergman spaces. Applications of these estimates to boundedness of the Bergman projection on $L^p(\mathbb{D}, \omega^{p/2})$, complex interpolation ...
Data synthesis and adversarial networks: A review and meta-analysis in cancer imaging
Despite technological and medical advances, the detection, interpretation, and treatment of cancer based on imaging data continue to pose significant challenges. These include inter-observer variability, class imbalance, ...
Time-consistent investment and consumption strategies under a general discount function
In the present paper, we investigate the Merton portfolio management problem in the context of non-exponential discounting, a context that gives rise to time-inconsistency of the decision-maker. We consider equilibrium ...
Cohomological localizations and set-theoretical reflection
Homological localizations of spaces and spectra have been a fundamental tool in algebraic topology since the decade of 1970, especially in the setting of chromatic homotopy. However, it is unknown whether the existence of ...
Iterated logarithm law for anticipating stochastic differential equations
We prove a functional law of iterated logarithm for the following kind of anticipating stochastic differential equations $$ \xi_t^u=X_0^u+\frac{1}{\sqrt{\log \log u}} \sum_{j=1}^k \int_0^t A_j^u\left(\xi_s^u\right) \circ ...
In-vivo Measurement of Wrist Movements During the Dart-Throwing Motion Using Inertial Measurement Units
Background: This study investigates the dart-throwing motion (DTM) by comparing an inertial measurement unit-based system previously validated for basic motion tasks with an optoelectronic motion capture system. The DTM ...
The Weak Vopênka Principle for definable classes of structures
We give a level-by-level analysis of the Weak Vopěnka Principle for definable classes of relational structures ( WVP ), in accordance with the complexity of their definition, and we determine the large-cardinal strength ...
On the Design of an ECOC-Compliant Genetic Algorithm
Genetic Algorithms (GA) have been previously applied to Error-Correcting Output Codes (ECOC) in state-of-the-art works in order to find a suitable coding matrix. Nevertheless, none of the presented techniques directly take ...
Threefolds with nef anticanonical bundles
In this paper we study the global structure of projective threefolds X whose anticanonical bundle K is nef.
Un critère d'extension des foncteurs définis sur les schémas lisses
Soeint $k$ un corp sde caractéristique zéro et $X$ une variété algébrique sur $k$. On sait, d'après le théorème de résolution des singularités d'Hironaka ([Hi1]), que l'on peut résoudre les singularités de $X$ , c'est-à-dire ...
Energy and discrepancy of rotationally invariant determinantal point processes in high dimensional spheres
We study expected Riesz s-energies and linear statistics of some determinantal processes on the sphere $\mathbb{S}^{d}$. In particular, we compute the expected Riesz and logarithmic energies of the determinantal processes ...
Conditions of angelic type in function spaces
This paper deals with a class of topological spaces in which α-compactness and compactness coincide and the tightness of a compact subset is less or equal than α, a being an infinite cardinal number. This class is a natural ...
Mujeres que estudian informática y matemáticas: quiénes son y por qué son tan pocas
Cuesta encontrar estudiantes de informática que sean mujeres. En la Universidad de Barcelona, apenas son un 15 %. En el Día Internacional de las Niñas en las Tecnologías de la Información y la Comunicación, las autoras les ...
Les martingales i les seves aplicacions des d'una perspectiva històrica
Segons sembla, el mot 'martingala' prové del nom provençal de la ciutat francesa de Martigues. Hi ha un allarga història sobre aquest mot i el seu ús en el context dels jocs d'atzar. No ens proposem aquí d'entrar en els ...
On cardinal sequences of length less than omega3
We prove the following consistency result for cardinal sequences of length $<\omega_3$ : if GCH holds and $\lambda \geq \omega_2$ is a regular cardinal, then in some cardinal-preserving generic extension $2^\omega=\lambda$ ...
Lessons learned from supplementing archaeological museum exhibitions with virtual reality
Archaeological excavations provide us with important clues about the past. Excavated artefacts represent an important connection to civilisations that no longer exist and help us understand some of their customs, traditions ...
