Results 31 to 40 of about 543,632 (147)

Riccati equations

International Journal of Mathematics and Mathematical Sciences, 1987
In this paper we find closed form solutions of some Riccati equations. Attention is restricted to the scalar as opposed to the matrix case. However, the ones considered have important applications to mathematics and the sciences, mostly in the form of ...
Lloyd K. Williams
doaj   +1 more source

Scalar--Flat Lorentzian Einstein--Weyl Spaces [PDF]

Class.Quant.Grav. 18 (2001) L77-L80, 2001
We find all three-dimensional Einstein--Weyl spaces with the vanishing scalar ...
arxiv   +1 more source

Consistency of regularization for scalar fields [PDF]

Lett.Math.Phys.87:283-291,2009, 2008
In two dimensional constructive quantum field theory for scalar fields, it is necessary to regularize both the action and the total (Gaussian) volume. In this note we consider the compatibility of these regularizations.
arxiv   +1 more source

Quantum theta functions and Gabor frames for modulation spaces [PDF]

, 2008
Representations of the celebrated Heisenberg commutation relations in quantum mechanics and their exponentiated versions form the starting point for a number of basic constructions, both in mathematics and mathematical physics (geometric quantization ...
A. Connes, A. Connes, A. Connes, A. Ron, A. Weil, A.J.E.M. Janssen, A.J.E.M. Janssen, A.J.E.M. Janssen, A.J.E.M. Janssen, D. Gabor, D.C. Farden, E.C. Young, F. Boca, Franz luef, G.B. Folland, H. Reiter, H.G. Feichtinger, H.G. Feichtinger, H.G. Feichtinger, H.G. Feichtinger, I. Daubechies, I. Daubechies, I. Daubechies, J.-i. Igusa, K. Gröchenig, K. Gröchenig, K. Gröchenig, K. Seip, M. Frank, M. Reiter, M. Reiter, M.A. Rieffel, M.A. Rieffel, M.A. Rieffel, M.A. Rieffel, M.J. Bastiaans, R. Howe, R.G. Littlejohn, R.J. Duffin, S.M. Sussman, W. Schempp, Yuri I. Manin   +41 more
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Calculus-enhanced energy-first curriculum for introductory physics improves student performance locally and in downstream courses

Physical Review Physics Education Research, 2019
Here we demonstrate the benefits of a new curriculum for introductory calculus-based physics that motivates classical mechanics using a modified version of Hamiltonian mechanics.
Sarah E. LeGresley, Jennifer A. Delgado, Christopher R. Bruner, Michael J. Murray, Christopher J. Fischer   +4 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

The isoperimetric inequality on asymptotically flat manifolds with nonnegative scalar curvature

, 2015
In this note, we consider the isoperimetric inequality on an asymptotically flat manifold with nonnegative scalar curvature, and improve it by using Hawking mass.
Shi, Yuguang
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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
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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

Tensor structure from scalar Feynman matroids [PDF]

Phys.Lett.B698:443-450,2011, 2010
We show how to interpret the scalar Feynman integrals which appear when reducing tensor integrals as scalar Feynman integrals coming from certain nice matroids.
arxiv   +1 more source