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### Envíos recientes

• #### Rigidity results for complete spacelike submanifolds in plane fronted waves ﻿

(Springer, 2022-09-08)
New rigidity results for complete non-compact spacelike submanifolds of arbitrary codimension in plane fronted waves are obtained. Under appropriate assumptions, we prove that a complete spacelike submanifold in these ...
• #### Inner Ideals of Real Simple Lie Algebras ﻿

(Springer, 2022-07-18)
A classification up to automorphism of the inner ideals of the real finite-dimensional simple Lie algebras is given, jointly with precise descriptions in the case of the exceptional Lie algebras.
• #### Rooted functor categories ﻿

(2022)
En esta comunicación extendemos el Teorema de Green a categorías de funtores aditivos sobre una categoría pequeña, introducimos la noción de "rooted small preadditive category" y caracterizamos los funtores proyectivos e ...
• #### Curso 0 Online de Aspectos Básicos de Matemáticas para alumnado de la Escuela de Ingenierías Industriales de la Universidad de Málaga ﻿

(2022-07)
El objetivo principal de esta comunicación es describir la experiencia que, desde el curso 2018/2019, venimos desarrollando un grupo de 7 profesores de las Áreas de Matemática Aplicada y de Estadística e Investigación ...
• #### EDUMATICUS: EDUcación MATemática con TIC en Universidad y Secundaria ﻿

(2022-07)
El objectivo principal de esta comunicación es presentar la actividad del grupo EDUMATICUS, EDUcación MATemática con TIC en Universidad y Secundaria, cuyo objetivo principal es elaborar materiales multimedia que sirvan ...
• #### Fuzzy closure systems: Motivation, definition and properties ﻿

(Elsevier, 2022-09)
The aim of this paper is to extend closure systems from being crisp sets with certain fuzzy properties to proper fuzzy sets. The presentation of the paper shows a thorough discussion on the different alternatives that ...
• #### Too Many Males or Too Many Females? Classroom Sex Ratio, Life History Strategies and Risk-Taking Behaviors ﻿

(Springer, 2022-06-01)
Prior research finds that sex ratio, defined as the proportion of males and females in a given context, is related to engagement in risk-taking behaviors. However, most research operationalizes sex ratio at a local context ...
• #### Fuzzy closure relations ﻿

(Elsevier, 2022-05-25)
The concept of closure operator is key in several branches of mathematics. In this paper, closure operators are extended to relational structures, more specifically to fuzzy relations in the framework of complete fuzzy ...
• #### Kitainik axioms do not characterize the class of inclusion measures based on contrapositive fuzzy implications ﻿

(Elsevier, 2022-05-17)
In this short communication, we refute the conjecture by Fodor and Yager from [5] that the class of inclusion measures proposed by Kitainik coincides with that of inclusion measures based on contrapositive fuzzy implications. ...
• #### A Non Markovian Retrial Queueing System ﻿

(2022-06-13)
Researches on retrial queues with non-geometrical retrial times is motivated by real computers and telecommunication networks, where retrial times can hardly be geometrical distributed. The inherent difficulty with ...
• #### Comparing and Tuning Machine Learning Algorithms to Predict Type 2 Diabetes Mellitus ﻿

(2022-06-13)
The main goals of this work is to study and compare machine learning algorithms to predict the development of type 2 diabetes mellitus. Four classifi cation algorithms have been considered, studying and comparing the ...
• #### Teaching Partial Differential Equations With a CAS ﻿

(2022-06-13)
It is very common that Engineering students nd difficulties when studying advanced Mathematics subjects. To help in the teaching and learning process of such subjects, the teacher can use an adequate mathematical software. ...
• #### Smart Sensorization Using Propositional Dynamic Logic ﻿

(IOAP-MPDI, 2022-05-20)
The current high energy prices pose a serious challenge, especially in the domestic economy. In this respect, one of the main problems is obtaining domestic hot water. For this reason, this article develops a heating system ...
• #### Conformal Vector Fields and Null Hypersurfaces ﻿

(Springer, 2022-05-03)
We give conditions for a conformal vector field to be tangent to a null hypersurface. We particularize to two important cases: a Killing vector field and a closed and conformal vector field. In the first case, we obtain a ...
• #### An exact dynamic programming approach to segmented isotonic regression ﻿

(Elsevier, 2021)
This paper proposes a polynomial-time algorithm to construct the monotone stepwise curve that minimizes the sum of squared errors with respect to a given cloud of data points. The fitted curve is also constrained on the ...
• #### Quasi-closed elements in fuzzy posets ﻿

(ELSEVIER, 2022-04)
We generalize the notion of quasi-closed element to fuzzy posets in two stages: First, in the crisp style in which each element in a given universe either is quasi-closed or not. Second, in the graded style by defining ...
• #### Chains in evolution algebras ﻿

(ELSEVIER, 2021-08-01)
In this work we approach three-dimensional evolution algebras from certain constructions performed on two-dimensional algebras. More precisely, we provide four different constructions producing three-dimensional evolution ...
• #### Cost-driven screening of network constraints for the unit commitment problem ﻿

(The Institute of Electrical and Electronics Engineers (IEEE), 2022-03-16)
In an attempt to speed up the solution of the unit commitment (UC) problem, both machine-learning and optimization-based methods have been proposed to lighten the full UC formulation by removing as many superfluous line-flow ...
• #### On projection methods for functional time series forecasting ﻿

(ScienceDirect, 2022-05)
Two nonparametric methods are presented for forecasting functional time series (FTS). The FTS we observe is a curve at a discrete-time point. We address both one-step-ahead forecasting and dynamic updating. Dynamic updating ...
• #### Inner ideals of real Lie algebras ﻿

(2022-01-17)
If $L$ is a Lie algebra, a subspace $B$ of $L$ is called an \emph{inner ideal} if $[B,[B,L]]\subset B$. This notion is inspired in Jordan algebras and it dues to [1], which used it to reconstruct the geometry defined by ...