Listar MA - Artículos por fecha de publicación
Mostrando ítems 1-20 de 67
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Using the Chu Construction for generalizing formal concept analysis
(2015-11-23)El objetivo de este artículo es mostrar la conexión entre generalizaciones de Análisis de Conceptos Formales y la construcción de Chu sobre la categoría ChuCors de contextos formales y correspondencias de Chu. Todas las ... -
The cycline subalgebra of a Kumjian-Pask algebra.
(American Mathematical Society, 2016-11-21)Let $\Lambda$ be a row-finite higher-rank graph with no sources. We identify a maximal commutative subalgebra $\mathcal{M}$ inside the Kumjian-Pask algebra ${\rm KP}_R(\Lambda)$. We also prove a generalized Cuntz-Krieger ... -
A Hankel matrix acting on spaces of analytic functions.
(Springer, 2017-11-02)If μ is a positive Borel measure on the interval [0, 1) we let H_μ be the Hankel matrix { μ_{n,k} }_{n,k} with entries μ_{n,k} =μ_{n+k}, where, for μ_n denotes the moment of order n of μ. This matrix induces formally an ... -
A generalized Hilbert operator acting on conformally invariant spaces
(Springer Basel AG, 2018)If μ is a positive Borel measure on the interval [0,1), we let H_μ be the Hankel matrix with entries μ_{n,k}=μ_{n+k}, where μ_n denotes the moment of order n of the measure μ. This matrix formally induces an operator on ... -
A Geo[X]/G[X]/1 retrial queueing system with removal work and total renewal discipline
(Elsevier, 2018-02)In this paper we consider a discrete-time retrial queueing system with batch arrivals of geometric type and general batch services. The arriving group of customers can decide to go directly to the server expelling out of ... -
Mean Lipschitz spaces and a generalized Hilbert operator.
(Springer, 2018-02-28)If μ is a positive Borel measure on the interval [0, 1) we let H_μ be the Hankel matrix H_μ={ μ_{n,k} }_{n,k} with entries μ_{n,k} =μ_{n+k} where μ_n denotes the moment of order n of μ. This matrix induces formally an ... -
The commutative core of a Leavitt path algebra.
(Elsevier, 2018-06-30)For any unital commutative ring R and for any graph E, we identify the commutative core of the Leavitt path algebra of E with coefficients in R, which is a maximal commutative subalgebra of the Leavitt path algebra. ... -
Leavitt path algebras of Cayley graphs C_n^j.
(Springer Nature, 2018-09-15)Let n be a positive integer. For each 0 <= j <= n-1 we let C_n^j denote the Cayley graph of the cyclic group Zn with respect to the subset {1,j}. Utilizing the Smith Normal Form process, we give an explicit description of ... -
Hankel matrices acting on the Hardy space H1 and on Dirichlet spaces.
(Springer, 2018-12-03)If μ is a positive Borel measure on the interval [0, 1) we let H_μ be the Hankel matrix H_μ={ μ_{n,k} }_{n,k} with entries μ_{n,k} =μ_{n+k} where μ_n denotes the moment of order n of μ. This matrix induces formally an ... -
A family of Dirichlet Morrey spaces.
(Taylor & Francis, 2019-02-03)To each weighted Dirichlet space D_p, 0<p<1, we associate a family of Morrey-type spaces D_{λ,p}, 0<λ<1, constructed by imposing growth conditions on the norm of hyperbolic translates of functions. We indicate some of the ... -
An arriving decision problem in a discrete-time queueing system
(Springer, 2019-08)This paper discusses a discrete-time queueing system in which an arriving customer may adopt four different strategies; two of them correspond to a LCFS discipline where displacements or expulsions occur, and in the other ... -
Parameterized simplification logic I: reasoning with implications and classes of closure operators
(Taylor & Francis, 2020)In this paper, we present a general inference system for reasoning with if-then rules. They are defined using general lattice-theoretic notions and their semantics is defined using particular closure operators parameterized ... -
Representations of relative Cohn path algebras.
(Elsevier, 2020-01-07)We study relative Cohn path algebras, also known as Leavitt-Cohn path algebras, and we realize them as partial skew group rings. To do this we prove uniqueness theorems for relative Cohn path algebras. Furthermore, given ... -
Largest ideals in Leavitt path algebras.
(Springer Nature, 2020-02-22)We identify largest ideals in Leavitt path algebras: the largest locally left/right artinian (which is the largest semisimple one), the largest locally left/right noetherian without minimal idempotents, the largest exchange, ... -
Feature-driven improvement of renewable energy forecasting and trading
(2020-02-26)Inspired from recent insights into the common ground of machine learning, optimization and decision-making, this paper proposes an easy-to-implement, but effective procedure to enhance both the quality of renewable energy ... -
A conversational recommender system for diagnosis using fuzzy rules.
(Elsevier, 2020-09-15)Graded implications in the framework of Fuzzy Formal Concept Analysis are used as the knowledge guiding the recommendations. An automated engine based on fuzzy Simplification Logic is proposed to make the suggestions to ... -
Mean curvature of spacelike submanifolds in a Brinkmann spacetime
(2021)Several geometric properties of complete spacelike submanifolds, with codimension at least two, in a Brinkmann spacetime are shown from natural assumptions involving the mean curvature vector field $\mcv$ of the spacelike ... -
Partition-based distributionally robust optimization via optimal transport with order cone constraints
(Springer, 2021)In this paper we wish to tackle stochastic programs affected by ambiguity about the probability law that governs their uncertain parameters. Using optimal transport theory, we construct an ambiguity set that exploits the ... -
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 ... -
Electricity Cost-Sharing in Energy Communities Under Dynamic Pricing and Uncertainty
(IEEE, 2021-02-15)Most of the prosumers nowadays are constrained to trade only with the supplier under a flat tariff or dynamic time-of-use price signals. This paper models and discusses the cost-saving benefits of flexible prosumers as ...