Results 41 to 50 of about 3,545,090 (308)

Totally positive refinable functions with general dilation M [PDF]

, 2017
We construct a new class of approximating functions that are M-refinable and provide shape preserving approximations. The refinable functions in the class are smooth, compactly supported, centrally symmetric and totally positive.
GORI, Laura, PITOLLI, Francesca
core   +1 more source

Some sufficient conditions for the convergence of the cascade algorithm and for the continuity of the scaling function

Journal of Numerical Analysis and Approximation Theory, 2003
We define a class of matrices which includes, under some natural assumptions, the matrices \(\mathbf{m}\left( 0\right)\), \(\mathbf{m}\left( 1\right)\) and \(T_{2N-1}\), which are the key matrices of the wavelets theory.
Daniela Roşca
doaj   +2 more sources

Action Principle for Newtonian Gravity. [PDF]

Physical Review Letters, 2018
We derive an action whose equations of motion contain the Poisson equation of Newtonian gravity. The construction requires a new notion of Newton-Cartan geometry based on an underlying symmetry algebra that differs from the usual Bargmann algebra.
Dennis Hansen, J. Hartong, N. Obers
semanticscholar   +1 more source

Thermal expansion effects on the one-dimensional liquid-solid phase transition in high temperature phase change materials

AIP Advances, 2019
Heat transfer characteristics of phase change materials (PCMs), such as the absorbed sensible and latent heat, during melting of the solid phase at constant pressure are analyzed.
Rubén Darío Santiago Acosta, José Antonio Otero, Ernesto Manuel Hernández Cooper, Rolando Pérez-Álvarez   +3 more
doaj   +1 more source

Effect of shear-induced contact area and aperture variations on nonlinear flow behaviors in fractal rock fractures

Journal of Rock Mechanics and Geotechnical Engineering, 2023
This study experimentally analyzes the nonlinear flow characteristics and channelization of fluid through rough-walled fractures during the shear process using a shear-flow-visualization apparatus.
Changsheng Wang, Richeng Liu, Yujing Jiang, Gang Wang, Hengjie Luan   +4 more
doaj   +1 more source

Killing spinor equations in dimension 7 and geometry of integrable G_2-manifolds

, 2001
We compute the scalar curvature of 7-dimensional ${G}_2$-manifolds admitting a connection with totally skew-symmetric torsion. We prove the formula for the general solution of the Killing spinor equation and express the Riemannian scalar curvature of the
Bonan, Boyer, Boyer, Bryant, Bryant, Cabrera, Cabrera, Dalakov, Fernandez, Fernandez, Friedrich, Friedrich, Gauduchon, Gauduchon, Hitchin, Ivanov, Ivanov, Joyce, Joyce, Lichnerowicz, Schoen, Stefan Ivanov, Strominger, Thomas Friedrich, Tod, Wang   +25 more
core   +1 more source

Functional Differential Equation with Dilated and Rotated Argument

Владикавказский математический журнал, 2021
В статье рассматривается краевая задача в ограниченной плоской области для функционально-дифференциального уравнения второго порядка, содержащего комбинацию растяжений и поворотов старших производных искомой функции. Найдены необходимые и достаточные условия в алгебраической форме выполнения неравенства типа Гординга, обеспечивающего однозначную ...
openaire   +2 more sources

Asymptotic theory of the hyperbolic boundary layer in shells of revolution at shock edge loading of the tangential type [PDF]

Известия Саратовского университета. Новая серия: Математика. Механика. Информатика
The present work is devoted to the construction of asymptotically optimized equations of the hyperbolic boundary layer in thin shells of revolution in the vicinity of the dilation wave front at shock edge loading of the tangential type.
Kirillova, Irina V.
doaj   +1 more source

Virtual moduli cycles and Gromov-Witten invariants of noncompact symplectic manifolds

, 2006
This paper constructs and studies the Gromov-Witten invariants and their properties for noncompact geometrically bounded symplectic manifolds. Two localization formulas for GW-invariants are also proposed and proved.
Lu, Guangcun
core   +1 more source

Thermodynamic model of coupled temperature and pressure effects for hydrate-bearing sediments within particle rearrangement theory

Yantu gongcheng xuebao
The mechanical properties of hydrate-bearing sediments are significantly influenced by changes in temperature and water pressure. Based on the particle rearrangement theory, a thermodynamic model that couples temperature and pressure, incorporating the ...
ZHOU Rui 1, BAI Bing 1, YANG Guangchang 2
doaj   +1 more source