Results 81 to 90 of about 30,783 (142)

Existence of Solution for Two Classes of Quasilinear Systems Defined on a Nonreflexive Orlicz–Sobolev Spaces

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

Shape Derivatives of the Eigenvalues of the de Rham Complex for Lipschitz Deformations and Variable Coefficients: Part II

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, Dirk Pauly, Michele Zaccaron   +2 more
wiley   +1 more source

Bidiagonal Decompositions and High‐Accuracy Computations for Newton Collocation Matrices

Numerical Linear Algebra with Applications, Volume 33, Issue 4, August 2026.
ABSTRACT We consider a class of collocation matrices A$$ A $$ associated with the Newton basis of the space of polynomials of degree at most n$$ n $$, evaluated at a set of l+1≥n+1$$ l+1\ge n+1 $$ nodes. In the most general setting, we allow n$$ n $$ of these nodes to either coincide with or differ from those defining the Newton basis.
E. Mainar, A. Marco, B. Rubio, R. Viaña
wiley   +1 more source

La probabilidad en los textos de matemática de 7° grado de educación básica The study of probability in basic education 7th grade textbooks

Investigación y Postgrado, 2006
El azar está presente en todos los contextos donde el hombre se desenvuelve; de allí la importancia de lograr que en su formación éste desarrolle el pensamiento aleatorio.
Nelly A. León Gómez
doaj  

Randomized Algorithms for Streaming Low‐Rank Approximation in Tree Tensor Network Format

Numerical Linear Algebra with Applications, Volume 33, Issue 4, August 2026.
ABSTRACT In this work, we present the tree tensor network Nyström (TTNN), an algorithm that extends recent research on streamable tensor approximation, such as for Tucker and tensor‐train formats, to the more general tree tensor network format, enabling a unified treatment of various existing methods.
Alberto Bucci, Gianfranco Verzella
wiley   +1 more source

Bianchi I Spacetimes in f(Q)‐Gravity

Fortschritte der Physik, Volume 74, Issue 8, August 2026.
ABSTRACT The Kasner spacetimes are exact solutions that are self‐similar and of significant interest because they can describe the dynamic evolution of kinematic variables near the singularity of the Mixmaster universe. The chaotic behavior of the Mixmaster universe is related to the Kasner relations.
Andronikos Paliathanasis, Genly Leon
wiley   +1 more source

Screening for brain‐related comorbidities in Duchenne muscular dystrophy: Construction, reliability, and validity of the BIND screener

Developmental Medicine &Child Neurology, Volume 68, Issue 8, Page 1080-1096, August 2026.
The Brain Involvement iN Dystrophinopathies (BIND) screener is an 18‐item questionnaire with strong reliability and validity for identifying potential brain‐related comorbidities in Duchenne muscular dystrophy. It allows rapid, cross‐age and cross‐country screening for both clinical and research purposes, demonstrating good sensitivity and specificity.
Ruben Miranda, Pien M. M. Weerkamp, Anna Kolesnik, Chloe Geagan, Daniela Chieffo, Mariana Suárez‐Bagnasco, David Skuse, Elizabeth Vroom, Erik H. Niks, John Vissing, Isabelle Desguerre, Volker Straub, Francesco Muntoni, Eugenio Mercuri, Jos G. M. Hendriksen, on behalf of BIND Consortium, Nathalie Angeard, Dimitrios Athanasiou, Suzie‐Ann Bakker, Nathalie Boddaert, Ellie Drummond, Chloe Durrlemann, Fernanda Fortunato, Luis Miguel García‐Moreno, Mattia Gervasi, Rosanne Govaart, Irina Guliaeva, Catherine Hankinson, Leslie Hemar, Rebecca Hendel, Hermien Kan, Leevi Kerkela, Gregory Landon, Monika Malinova, William Mandy, Federica Moriconi, Monia Pellizzari, Sarah Poncet, Elvina Sakellariou, Sergiu Siminiuc, Anna Würgler Slipsager, Lily Smythe, Pietro Spitali, Mads Peter Godtfeldt Stemmerik, Asmus Vogel, Jeanne Wolstencroft, Camilla Zanetti   +46 more
wiley   +1 more source

Aprender a aprender Matemática

Revista de Educação Popular, 2008
Este artigo pretende descrever a visão dos novos rumos da Educação Matemática no intuito de incentivar o professor a se envolver na busca do Aprender a Aprender através da reflexão, intervindo para modificar e melhorar sua ação.
Rosilane Cristina de Oliveira
doaj  

Kazdan–Warner obstructions for a fourth‐order boundary problem

Bulletin of the London Mathematical Society, Volume 58, Issue 8, August 2026.
Abstract We derive Kazdan–Warner type identities for the boundary problem of prescribing nonconstant interior Q$Q$ curvature and boundary T$T$ curvature on the upper hemisphere S+4${\mathbb {S}}^{4}_{+}$ by a conformal change of the standard metric.
Sergio Cruz‐Blázquez, Azahara DelaTorre   +1 more
wiley   +1 more source

Diseño y validación de un instrumento para la observación de las prácticas preprofesionales del futuro profesor de matemática

Cuaderno de Pedagogía Universitaria
Este estudio presenta el diseño y la validación de un instrumento para la observación en la formación práctica preprofesional del futuro profesor de matemática, mediante un proceso que contempló 5 etapas: (1) revisión de la literatura desde dos temas ...
Salvador Alejandro Alarcón Godoy, Carolina Henríquez-Rivas   +1 more
doaj