Listar MA - Contribuciones a congresos científicos por título
Mostrando ítems 63-82 de 99
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Octonions and exceptional Lie algebras
Draper-Fontanals, Cristina
(2020-03-05)
It is well known that octonions (both real and complex) are very involved in the structure of the exceptional Lie algebras. We will explore several aspects of this relationship: how octonions provide models of the exceptional ... -
Odd-dimensional spheres: nabla-Einstein manifolds
Draper-Fontanals, Cristina (2014-03-24)
Utilizamos el teorema de Nomizu sobre conexiones afines invariantes para describir variedades de Riemann-Cartan en las esferas impares, vistas como cocientes de grupos unitarios. Esta técnica nos posibilita hallar para qué ... -
On Augmented Lagrangeans in Linear Programming (LP) Phase I
The concept of linking constraints to an objective in optimization problems was found due to Lagrange in the 19th century. The so-called Lagrange multipliers were related to duality theory in the 20th century. At the same ... -
On the existence of right adjoints for surjective mappings between fuzzy structures.
Cabrera, Inma P.; Cordero-Ortega, Pablo; García-Pardo, Francisca; Ojeda-Aciego, Manuel; De Baets, Bernard (National Research University Higher School of Economics, Russia, 2016)
En este trabajo los autores continúan su estudio de la caracterización de la existencia de adjunciones (conexiones de Galois isótonas) cuyo codominio no está dotado de estructura en principio. En este artículo se considera ... -
On the homological properties of the universal enveloping Leibniz algebra
(2018-02-27)We presente a study of graded Leibniz algebras and its universal enveloping Leibniz algebra. We prove that the universal enveloping Leibniz algebra of a finite dimensional graded Leibniz algebra is a quasi-Koszul algebra ... -
On the notion of fuzzy adjunctions between fuzzy orders
Las adjunciones (también denominadas conexiones de Galois isótonas) entre dos estructuras matemáticas proporcionan una manera de conectar ambas teorías que permite compartir las ventajas de ambas. Hay varios resultados en ... -
On the Use of F-transform on the Reduction of Concept Lattices
In this paper, we show that F-transform can be used to re- duce relational databases. Subsequently, we show that the respective concept lattice is reduced significantly as well. Moreover, we present a clarifying example ... -
Optimization of Energy Distribution in Solar Panel Array Configurations by Graph Theory and Minkowski’s Paths
Merino-Córdoba, Salvador; Sanchez, Francisco; Sidrach-de-Cardona-Ortin, Mariano; Guzmán-Navarro, Francisco; Guzmán-Sepúlveda, Rafael (2016-07-22)
Nowadays, the development of the photovoltaic (PV) technology is consolidated as a source of renewable energy. The research in the topic of maximum improvement on the energy efficiency of the PV plants is today a major ... -
Ordering objects via attribute preferences
Cabrera, Inma P.; Ojeda-Aciego, Manuel; Pocs, Jozef (2014-10-29)
We apply recent results on the construction of suitable orderings for the existence of right adjoint to the analysis of the following problem: given a preference ordering on the set of attributes of a given context, we ... -
Phases Dynamic Balancer
Martínez-del-Castillo, Javier; Guzmán-Navarro, Francisco; Merino-Córdoba, Salvador; Guzmán-Sepúlveda, Rafael; Benítez, Mario (2016-07-25)
Most of the current domestic installations are single phase, with contracted power equal to or less than 15 kW and with a potential difference of 230 V. When consumption is expected to be higher you choose to use three ... -
Predicting the electricity demand response via data-driven inverse optimization
Morales-González, Juan Miguel; Saez-Gallego, Javier (2018-07-06)
A method to predict the aggregate demand of a cluster of price-responsive consumers of electricity is discussed in this presentation. The price-response of the aggregation is modeled by an optimization problem whose ... -
Queueuing system with failures and priorities
Atencia-McKillop, Iván; Galán-García, José Luis; Aguilera-Venegas, Gabriel; Rodríguez, Pedro; Galán-García, María Ángeles (2016-07-07)
Queueing theory provides models, structural insights, problem solutions and algorithms to many application areas. Due to its practical applicability to production, manufacturing, home automation, communications ... -
Random samples generation with Stata from continuous and discrete distributions
Aguilera-Venegas, Gabriel; Galán-García, José Luis; Galán-García, María Ángeles; Padilla-Domínguez, Yolanda Carmen; Rodríguez-Cielos, Pedro; Rodríguez-Cielos, Ricardo[et al.] (2018-03-12)
Simulations are nowadays a very important way of analyzing new improvements in different areas before the physical implementation, which may require hard resources which could only be affronted in case of a high probability ... -
Relation-based Galois connections: towards the residual of a relation
Cabrera, Inma P.; Cordero-Ortega, Pablo; Ojeda-Aciego, Manuel (2017-09-29)
We explore a suitable generalization of the notion of Galois connection in which their components are binary relations. Many different approaches are possible depending both on the (pre-)order relation between subsets in ... -
Removing redundancy for attribute implications in data with grades
Mora-Bonilla, Ángel; Rodríguez-Lorenzo, Estrella; Cordero-Ortega, Pablo; Enciso-García-Oliveros, Manuel (Cristina Alcalde, Humberto Bustince, Francisco Javier Fernández, 2016)
Reasoning with if-then rules –in particular, with those taking from of implications between conjunctions of attributes– is crucial in many disciplines ranging from theoretical computer science to applications. One of the ... -
A retrial discrete-time queueing system with actions in the server
Atencia-McKillop, Iván (2019-10-31)
This paper considers a discrete-time retrial queueing system with movements. The arriving customers can opt to go directly to the server obtaining immediately their service or to join the orbit. In the first case, if the ... -
Rooted functor categories
Cortés-Izurdiaga, Manuel (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 ... -
Server information mechanism in a discrete-time queueing system
Atencia-McKillop, Iván; Galán-García, José Luis; Aguilera-Venegas, Gabriel; Rodríguez-Cielos, Pedro; Galán-García, María Ángeles (2018-06-14)
This paper discusses a discrete-time queueing system in which an arriving customer may adopt four di erent strategies depending on the income information, two of them correspond to a LCFS discipline where displacements ... -
SFOPDES: A stepwise tutorial for teaching Partial Differential Equations using a CAS
Galán-García, José Luis; Aguilera-Venegas, Gabriel; Rodríguez-Cielos, Pedro; Padilla-Domínguez, Yolanda Carmen; Galán-García, María Ángeles; Rodríguez-Cielos, Ricardo[et al.] (2019-07-25)
Partial Differential Equations (PDE) are one of the most difficult topics that Engineering and Sciences students have to study in the different Math subjects in their degree. In this talk we introduce SFOPDES (Stepwise ... -
Simetrías en las formas reales de e6
Draper-Fontanals, Cristina (2015-02-13)
Las graduaciones finas en las 5 posibles formas reales del álgebra de Lie excepcional e6 se discuten, proprocionando construcciones explícitas de algunas de ellas, y evidencias de la no existencia en otros casos.