Results 51 to 60 of about 2,326,589 (197)

Contact manifolds, Lagrangian Grassmannians and PDEs

Complex Manifolds, 2018
In this paper we review a geometric approach to PDEs. We mainly focus on scalar PDEs in n independent variables and one dependent variable of order one and two, by insisting on the underlying (2n + 1)-dimensional contact manifold and the so-called ...
Eshkobilov Olimjon, Manno Gianni, Moreno Giovanni, Sagerschnig Katja   +3 more
doaj   +1 more source

A Higher Order Chebyshev-Halley-Type Family of Iterative Methods for Multiple Roots

Mathematics, 2019
The aim of this paper is to introduce new high order iterative methods for multiple roots of the nonlinear scalar equation; this is a demanding task in the area of computational mathematics and numerical analysis. Specifically, we present a new Chebyshev&
Ramandeep Behl, Eulalia Martínez, Fabricio Cevallos, Diego Alarcón   +3 more
doaj   +1 more source

On the computation of the term $w_{21}z^2\bar{z}$ of the series defining the center manifold for a scalar delay differential equation

, 2011
In computing the third order terms of the series of powers of the center manifold at an equilibrium point of a scalar delay differential equation, with a single constant delay $r>0,$ some problems occur at the term $w_{21}z^2\bar{z}.$ More precisely, in ...
Anca-Veronica Ion, J. Hale, J. Hale, T. Faria, W. Wischert   +4 more
core   +1 more source

Learning mathematics with personal mobile devices in school: a multigroup invariance analysis of acceptance among students and teachers

Frontiers in Education
Students’ use of personal mobile devices (PMDs), including smartphones, tablets, and laptops, in mathematics classrooms globally has become feasible due to the implementation of the bring your own device (BYOD) initiatives and policies in schools ...
Cloneria Nyambali Jatileni, Sari Havu-Nuutinen, Susanna Pöntinen, Jari Kukkonen   +3 more
doaj   +1 more source

Enabling visually impaired people to learn three-dimensional tactile graphics with a 3DOF haptic mouse

Journal of NeuroEngineering and Rehabilitation, 2021
Background In this work, we present a novel sensory substitution system that enables to learn three dimensional digital information via touch when vision is unavailable. The system is based on a mouse-shaped device, designed to jointly perceive, with one
Mariacarla Memeo, Marco Jacono, Giulio Sandini, Luca Brayda   +3 more
doaj   +1 more source

Production of scalar {ital K{bar K}} molecules in {phi} radiative decays [PDF]

, 1996
The potentialities of the production of the scalar K{bar K} molecules in {phi} radiative decays are considered beyond the narrow resonance width approximation. It is shown that B{bold (}{phi}{r_arrow}{gamma}f{sub 0}(a{sub 0}){r_arrow}{gamma}{pi}{pi}({pi}{
N.N.Achasov, V.V.Gubin, V.I.Shevchenko S.L.Sobolev Institute for Mathematics, Novosibirsk, Institute for Theoretical, E. Physics, Moscow   +6 more
semanticscholar   +1 more source

Wheeler-DeWitt Quantization of Gravity Models of Unified Dark Energy and Dark Matter

, 2017
First, we describe the construction of a new type of gravity-matter models based on the formalism of non-Riemannian space-time volume forms - alternative generally covariant integration measure densities (volume elements) defined in terms of auxiliary ...
Bryce S. DeWitt, N. A. Bahcall, Nima Arkani-Hamed, P. J. E. Peebles   +3 more
core   +1 more source

Psychometric Properties of the Sources of Counseling Self Efficacy in a Sample of Malaysian Secondary School Counselors

SAGE Open, 2020
Self-efficacy has been considered an essential mediator and predictor of individual counseling performance. As there is no existing scale to measure counseling self-efficacy in the counseling domain, the Sources of Middle School Mathematics Self-Efficacy
Ooi Pei-Boon, Wan Marzuki Wan Jaafar, Ang Chin-Siang, Chan Nee-Nee   +3 more
doaj   +1 more source

Integral and fractional equations, positive solutions, and Schaefer's fixed point theorem [PDF]

Opuscula Mathematica, 2016
This is the continuation of four earlier studies of a scalar fractional differential equation of Riemann-Liouville type \[D^qx(t) = -f(t,x(t)), \quad \lim_{t\to 0^+} t^{1-q} x(t) = x^0 \in\Re \quad (0 \lt q \lt 1), \tag {a}\] in which we first invert it ...
L. C. Becker, T. A. Burton, I. K. Purnaras   +2 more
doaj   +1 more source

Rating alternatives from pairwise comparisons by solving tropical optimization problems

, 2015
We consider problems of rating alternatives based on their pairwise comparison under various assumptions, including constraints on the final scores of alternatives.
Krivulin, Nikolai
core   +1 more source