Results 41 to 50 of about 51,049 (148)

Focal decompositions for linear differential equations of the second order

open access: yesAbstract and Applied Analysis, Volume 2003, Issue 14, Page 813-821, 2003., 2003
Focal decomposition associated to an ordinary differential equation of the second order is a partition of the set of all two‐points boundary value problems according to the number of their solutions. Two equations are called focally equivalent if there exists a homomorphism of the set of two‐points problems to itself such that the image of the focal ...
L. Birbrair   +2 more
wiley   +1 more source

Posibilidades del juego de construcción para el aprendizaje de las Matemáticas en la Educación Infantil

open access: yesPulso: Revista de Educación, 2011
Presentamos una guía matemática, evolutiva y didáctica para estudiar el juego de construcción en la Educación Infantil y reflexionar sobre las posibilidades que ofrece para el aprendizaje de las matemáticas.
Carlos de Castro Hernández   +2 more
doaj   +1 more source

Introducción a los z-conjuntos [PDF]

open access: yes, 2006
En este documento se hace una introducción a los z-conjuntos como un tema de estudio en la topología infinito-dimensional. Se presentan inicialmente, conceptos de Topología General, luego se da el concepto de Z-conjunto y se describen algunas ...
Soler, Nubia
core  

Zero‐curvature subconformal structures and dispersionless integrability in dimension five

open access: yesJournal of the London Mathematical Society, Volume 110, Issue 6, December 2024.
Abstract We extend the recent paradigm “Integrability via Geometry” from dimensions 3 and 4 to higher dimensions, relating dispersionless integrability of partial differential equations to curvature constraints of the background geometry. We observe that in higher dimensions on any solution manifold, the symbol defines a vector distribution equipped ...
Boris Kruglikov, Omid Makhmali
wiley   +1 more source

Optimal bound for the number of (−1)‐curves on extremal rational surfaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 31, Issue 2, Page 123-126, 2002., 2002
We give an optimal bound for the number of (−1)‐curves on an extremal rational surface X under the assumption that −KX is numerically effective and having self‐intersection zero. We also prove that a nonelliptic extremal rational surface has at most nine (−1)‐curves.
Mustapha Lahyane
wiley   +1 more source

Topología Poroscópica

open access: yesRevista Chicomoztoc
La Poroscopia del maestro Edmond Alexander Locard de 1912, fue planteada como un análisis complementario del método dactiloscópico, porque las cortes veían con incertidumbre que una sola huella es muy poca evidencia, cuando el ser humano tiene 10 ...
Luis Arturo Herrera Garcia   +2 more
doaj   +1 more source

Revisiting the mechanism of the mono nuclear copper-catalyzed cycloaddition of azide and alkynes (CuAAC) by the topology of .... [PDF]

open access: yes, 2013
Comunicación presentada y aceptada en el CHITEL2013, XXXIX International Conference THEORETICAL CHEMISTS OF LATIN EXPRESSION (XXXIX Congreso Internacional de Químicos de Expresión Latina).Se analiza el mecanismo de la reacción de cicloadición, catalizada
Calvo-Losada, Saturnino   +2 more
core  

Evaluating cryptographic vulnerabilities created by quantum computing in industrial control systems

open access: yesJournal of Critical Infrastructure Policy, Volume 5, Issue 2, Page 88-110, Fall/Winter 2024.
Abstract Quantum computing is expected to eventually be able to break the public‐key cryptography algorithms currently used throughout information technology (IT) infrastructure, undermining foundational tools used to maintain information security across the country's critical infrastructure.
Michael J. D. Vermeer   +5 more
wiley   +1 more source

On real hypersurfaces in quaternionic projective space with 𝒟⊥‐recurrent second fundamental tensor

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 22, Issue 1, Page 109-117, 1999., 1999
In this paper, we give a complete classification of real hypersurfaces in a quaternionic projective space QPm with 𝒟⊥‐recurrent second fundamental tensor under certain condition on the orthogonal distribution 𝒟.
Young Jin Suh, Juan De Dios Pérez
wiley   +1 more source

Desenvolvimento De Um Conversor CC-CC Boost-Forward Integrado Para Aplicações Com Elevado Ganho De Tensão

open access: yesEletrônica de Potência, 2017
Este artigo propõe uma topologia de conversor CC-CC integrado para aplicações que exigem elevado ganho de tensão. A topologia integra os conversores Boost e Forward com um único interruptor ativo.
Julian Cezar Giacomini   +4 more
doaj   +1 more source

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