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How to compute the Stanley depth of a module
(American Mathematical Society, 2017)
In this paper we introduce an algorithm for computing the Stanleydepth of a finitely generated multigraded module M over the polynomialring K[X1,...,Xn]. As an application, we give an example of a module whoseStanley depth ...
The Bishop-Phelps-Bollobás properties in complex Hilbert space
(Wiley, 2021-12-02)
In this paper, we consider theBishop–Phelps–Bollobás point propertyfor variousclasses of operators on complex Hilbert spaces, which is a stronger property thanthe Bishop–Phelps–Bollobás property. We also deal with analogous ...
Invertibles in topological rings: a new approach
(Springer, 2021-11-15)
Every element in the boundary of the group of invertibles of a Banach algebra is a topological zero divisor. We extend this result to the scope of topological rings. In particular, we
define a new class of semi-normed ...
On the heterogeneous link between public debt and economic growth
(Elsevier, 2022-02-12)
We use panel data for 115 countries over the period 1995–2016 to model the heterogeneity of the debt-growth nexus along with the underlying factors that might explain it. The grouped fixed effect (GFE) estimator is used ...
A note on trigonometric identities involving non-commuting matrices
(Springer Milan, 2017)
An algorithm is presented for generating successive approximations to trigonometric functions of sums of non-commuting matrices. The resulting expressions involve nested
commutators of the respective matrices. The procedure ...
Intervention in prediction measure: a new approach to assessing variable importance for random forests
(Springer VerlagBioMed Central, 2017-05)
Background
Random forests are a popular method in many fields since they can be successfully applied to complex data, with a small sample size, complex interactions and correlations, mixed type predictors, etc. Furthermore, ...
First eigenvalue of the Laplacian of a geodesic ball and area-based symmetrization of its metric tensor
(Element, 2022)
Given a Riemmanian manifold, we provide a new method to compute a sharp upper
bound for the first eigenvalue of the Laplacian for the Dirichlet problem on a geodesic ball of
radius less than the injectivity radius of the ...
Highly tempering infinite matrices
(Springer Milan, 2017-02)
In this short note, it is proved the existence of in nite matrices that
not only preserve convergence and limits of sequences but also convert every mem-
ber of some dense vector space consisting, except for zero, of ...
Foliations with isolated singularities on Hirzebruch surfaces
(De Gruyter, 2021)
We study foliations ℱ on Hirzebruch surfaces Sδ and prove that, similarly to those on the projective plane, any ℱ can be represented by a bi-homogeneous polynomial affine 1-form. In case ℱ has isolated singularities, we ...
Second-order and local characteristics of network intensity functions
(SpringerSociedad de Estadística e Investigación Operativa (Spanish Society of Statistics and Operations Research), 2021)
The last decade has witnessed an increase of interest in the spatial analysis of structuredpoint patterns over networks whose analysis is challenging because of geometricalcomplexities and unique methodological problems. ...