Results 71 to 80 of about 15,833 (150)
Wavelet‐Based Hurst Exponent Estimation
WIREs Computational Statistics, Volume 18, Issue 3, September 2026.The review explores how wavelet‐based methods for estimating the Hurst parameters have developed from their theoretical roots to real‐world applications in fields like biology, engineering, and telecommunications. The review aims to highlight key techniques, compare their strengths and limitations, and point out challenges that still need to be ...
Dixon Vimalajeewa +2 more
wiley +1 more source
Energy and Planarity in Boron‐Nitrogen Fulvene Isomers: A Quantum‐Chemical and QSPR Study
International Journal of Quantum Chemistry, Volume 126, Issue 15, August 5, 2026.Electronic structure quantum‐chemical computations and Quantitative Structure–Property Relationships (QSPR) regression and classification models are used as complementary tools for classifying unknown boron‐nitrogen fulvene isomers with respect to energy order and planarity.
Gustavo E. Massaccesi +7 more
wiley +1 more source
Weak, Strong and Mixed Extensions of Relations to Spaces of Ultrafilters
Mathematical Logic Quarterly, Volume 72, Issue 3, August 2026.ABSTRACT The use of nonstandard methods to characterize properties of weak, strong and mixed extensions of congruences to ultrafilters has been the main topic of several recent papers, focused mostly on congruences and divisions. We show that similar methods can be used to extend these characterizations to arbitrary relations and their interplay.
Leonardo Raffaello Maximilian Gasparro +1 more
wiley +1 more source
Introduction: A Mnemosyne of Art & Science
Renaissance Studies, EarlyView.
Ana Duarte Rodrigues +2 more
wiley +1 more source
Hölder Regularity of the Solutions of Fredholm Integral Equations on Upper Ahlfors Regular Sets
Mathematical Methods in the Applied Sciences, Volume 49, Issue 12, Page 13361-13381, August 2026.ABSTRACT We extend to the context of metric measured spaces, with a measure that satisfies upper Ahlfors growth conditions, the validity of (generalized) Hölder continuity results for the solution of a Fredholm integral equation of the second kind. Here we note that upper Ahlfors growth conditions include also cases of nondoubling measures.
Massimo Lanza de Cristoforis +1 more
wiley +1 more source
Un vaso celtibérico con problema
Cuadernos de Arqueología de la Universidad de Navarra, 2010 El artículo describe una vasija cerámica encontrada en el alfar de los Pedregales (Clunia, Hispania Citerior) hacia 1930 y que muestra una infrecuente decoración: una figura geométrica rotulada con cifras y el enunciado de un problema.
Joaquín L. Gómez-Pantoja
doaj
Mathematical Methods in the Applied Sciences, Volume 49, Issue 12, Page 13324-13360, August 2026.ABSTRACT This paper proves the existence of nontrivial solution for two classes of quasilinear systems of the type −ΔΦ1u=Fu(x,u,v)+λRu(x,u,v)inΩ−ΔΦ2v=−Fv(x,u,v)−λRv(x,u,v)inΩu=v=0on∂Ω$$ \left\{\begin{array}{l}\hfill -{\Delta}_{\Phi_1}u={F}_u\left(x,u,v\right)+\lambda {R}_u\left(x,u,v\right)\kern0.1832424242424242em \mathrm{in}\kern0.3em \Omega ...
Lucas da Silva, Marco Souto
wiley +1 more source
Instrumentos consistentes para la enseñanza de fracciones en 4o. grado
Revista Electrónica de Investigación Educativa, 2018 En Chile y, en general, para todos los sistemas educativos del mundo es conveniente disponer de instrumentos consistentes que midan los conocimientos que requiere un profesor para lograr que sus alumnos aprendan; instrumentos útiles para la formación ...
Palmenia de la Cruz Rodríguez Rojas +1 more
doaj +1 more source
Mathematical Methods in the Applied Sciences, Volume 49, Issue 12, Page 14244-14265, August 2026.ABSTRACT In this second part of our series of papers, we develop an abstract framework suitable for de Rham complexes that depend on a parameter belonging to an arbitrary Banach space. Our primary focus is on spectral perturbation problems and the differentiability of eigenvalues with respect to perturbations of the involved parameters. As a byproduct,
Pier Domenico Lamberti +2 more
wiley +1 more source
Las actividades matemáticas y los libros de texto desde una perspectiva sociocultural
, 2010 Esta investigación se ocupa de actividades o prácticas matemáticas como contar, localizar, medir, jugar, diseñar y explicar (Bishop, 1999) en una selección de libros de texto de matemáticas del 7º grado de la Educación Básica venezolana, en particular en el marco del abordaje que hacen de uno de los tópicos que contempla el plan de estudios ...
openaire +2 more sources