Listar MAT_Articles por título
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Balleans of topological groups
Springer Verlag (2011)A subset S of a topological group G is called bounded if, for every neighborhood U of the identity of G, there exists a finite subset F such that S ⊆ FU, S ⊆ UF. The family of all bounded subsets of G determines two ... -
Basic actions to reduce dropout rates in distance learning
(2018-02)Today’s society, which is strongly based on knowledge and interaction with information, has a key component in technological innovation, a fundamental tool for the development of the current teaching methodologies. Nowadays, ...
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Bayesian and network models with covariate effects for predicting heating energy demand
Elsevier (2022)The spatial effect is an element presented in many geostatistical works and it should be incorporated into studies regarding the heating energy demand of residential building stocks. The most common approaches have been ...
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Becoming a mother shifts the activity of the social and motivation brain networks in mice
Elsevier (2022-06-03)During pregnancy hormones increase motivated pup-directed behaviors. We here analyze hormone-induced changes in brain activity, by comparing cFos-immunoreactivity in the sociosexual (SBN) and motivation brain networks ...
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Behaviour of fixed and critical points of the (α, c) −family of iterative methods
Springer Verlag (2015-01)In this paper we study the dynamical behavior of the (α, c ) -family of itera- tive methods for solving nonlinear equations, when we apply the fixed point operator associated to this family on quadratic polynomials. ...
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Bézier surfaces with prescribed diagonals
Elsevier (2023-05)The affine space of all tensor product Bézier patches of degree n × n with prescribed main diagonal curves is determined. First, the pair of Bézier curves which can be diagonals of a Bézier patch is characterized. Besides ...
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Bifurcations in the two imaginary centers problem
Institute of Mathematics of the Academy of Sciences of the Czech Republic (2011)In this paper we show that, for a given value of the energy, there is a bifurcation for the two imaginary centers problem. For this value not only the configuration of the orbits changes but also a change in the topology ...
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Bilinear isometries on spaces of vector-valued continuous functions
Elsevier (2012)Let X, Y, Z be compact Hausdorff spaces and let E1, E2, E3 be Banach spaces. If T:C(X,E1)×C(Y,E2)→C(Z,E3) is a bilinear isometry which is stable on constants and E3 is strictly convex, then there exist a nonempty subset ...
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Bilinear isometries on subspaces of continuous functions
Wiley-VCH Verlag (2010-03-18)Let A and B be strongly separating linear subspaces of C0(X) and C0(Y ), respectively, and assume that ∂A ̸= ∅ (∂A stands for the set of generalized peak points for A) and ∂B ≠ ∅. Let T : A×B −→ C0(Z) be a bilinear isometry. ...
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Bloch functions on the unit ball of a Banach space
American Mathematical Society (2021-02-10)The space of Bloch functions on bounded symmetric domains is extended by considering Bloch functions f on the unit ball BE of nite and in nite dimensional complex Banach spaces in two di erent ways: by extending the ...
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Bloch functions on the unit ball of an infinite dimensional Hilbert space
(2015-07-03)The Bloch space has been studied on the open unit disk of C and some homogeneous domains of Cn. We define Bloch functions on the open unit ball of a Hilbert space E and prove that the corresponding space B(BE) is invariant ...
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Bootstrap bandwidth selection for the pair correlation function of inhomogeneous spatial point processes
Taylor and Francis Group (2023-06-13)This work focuses on kernel estimation of the pair correlation function (PCF) for inhomogeneous spatial point processes. We propose a bootstrap bandwidth selector based on minimizing the mean integrated squared error (MISE). ...
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Bootstrapping regression models with locally stationary disturbances
Springer (2020)A linear regression model with errors following a time-varying process is considered.In this class of models, the smoothness condition both in the trend function and inthe correlation structure of the error term ensures ... -
Bott Integrable Hamiltonian Systems on S2 x S1
American Institute of Mathematical Sciences (2008)In this paper, we study the topology of Bott integrable Hamiltonian flows on S2 × S1 in terms of some types of periodic orbits, called NMS periodic orbits. The set of these periodic orbits can be identified by means ...
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Bounded Sets in Topological Spaces
MDPI (2022-02)Let G be a monoid that acts on a topological space X by homeomorphisms such that there is a point x0∈X with GU=X for each neighbourhood U of x0. A subset A of X is said to be G-bounded if for each neighbourhood U of x0 ...
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Brief Overview on the COVID-19 Pandemic in Spain
Insight Medical Publishing (2021)We analyze the evolution of the COVID-19 pandemic in Spain. Several numerical methods and models are studied to understand how the evolution of this pandemic is referenced. We also justify the adjustments that we have made ...
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Brunn-Minkowski and Zhang inequalities for Convolution Bodies
Elsevier (2013-05-01)A quantitative version of Minkowski sum, extending the definition of θ- convolution of convex bodies, is studied to obtain extensions of the Brunn- Minkowski and Zhang inequalities, as well as, other interesting properties ...
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Bulbs of Period Two in the Family of Chebyshev-Halley Iterative Methods on Quadratic Polynomials
Hindawi (2013)The parameter space associated to the parametric family of Chebyshev-Halley on quadratic polynomials shows a dynamical richness worthy of study. This analysis has been initiated by the authors in previous works. Every value ...
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c-Normality and coprime action in finite groups
Springer (2023-10-31)A subgroup H of a finite group G is called c-normal if there exists a normal subgroup N in G such that G = HN and , the largest normal subgroup of G contained in H. c-Normality is a weaker form of normality, introduced by ...
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Can interactions among predators alter the natural regulation of an herbivore in a climate change scenario? The case of Tetranychus urticae and its predators in citrus
Springer (2019-06)Climate change can dramatically affect the food web configuration of arthropod communities through its effects on species interactions. We have studied whether these effects could alter the probability of local extinction ...
