搜索结果: 151-165 共查到“知识库 线性代数”相关记录652条 . 查询时间(4.377 秒)
On the existence of bounded solutions for a nonlinear elliptic system
bounded solutions a nonlinear elliptic system
2010/11/9
This work deals with the system $(-\Delta)^m u= a(x)\, v^p$, $(-\Delta)^m v=b(x)\, u^q$ with Dirichlet boundary condition in a domain $\Omega\subset\RR^n$, where $\Omega$ is a ball if $n\ge 3$ or a sm...
In this paper, we established a new Ostrowski-type inequality involving functions of two independent variables.
A rational Arnoldi approach for ill-conditioned linear systems
Ill-conditioned linear systems Arnoldi algorithm Matrix function Tikhonov regularization
2010/12/14
For the solution of full-rank ill-posed linear systems a new approach based on the Arnoldi
algorithm is presented. Working with regularized systems, the method theoretically recon-
structs the true ...
Measure valued solutions of sub-linear diffusion equations with a drift term
sublinear diffusion concentration phenomena propagation of singularities gradient flows
2010/12/9
In this paper we study nonnegative, measure valued solutions of the initial value problem for
one-dimensional drift-diffusion equations when the nonlinear diffusion is governed by an increasing C1 fu...
Semigroups of finite-dimensional random projections
Stochastic semigroup random operator Kolmogorov widths stochastic flow
2010/12/9
In this paper we present a complete description of a stochastic semigroup of finite-dimensional projections in Hilbert space. The geometry of such semigroups is characterized by the asymptotic be-havi...
Limiting Negations in Bounded Treewidth and Up ward Planar Circuits
Limiting Treewidth Planar Circuits
2012/12/3
The decrease of a Boolean function f : {0, 1}n → {0, 1},denoted by d(f) is the maximum number of inverse indices in any increasing chain of inputs x1, . . . , x ∈ {0, 1}n, where i is an inverse index...
Preconditioners based on Windowed Fourier Frames Applied to Elliptic Partial Differential Equations
Windowed Fourier frame symbol elliptic PDE preconditioner
2010/12/3
We investigate the application of windowed Fourier frames (WFFs) to the numerical solution of partial di erential equations, focussing on elliptic equations. The action of a partial di erential operat...
Results of R. Stanley and M. Masuda completely characterize the h-vectors of simplicial posets whose order complexes are spheres. In this paper we examine the corresponding question in the case where ...
一类二阶非自治Hamilton系统的周期解
二阶非自治Hamilton系统 极小作用原理 鞍点定理 次线性增长 线性增长 周期解
2012/11/21
在线性增长和次线性增长条件下，利用临界点理论中的极小作用原理和鞍点定理，研究了二阶非自治Hamilton系统周期解的存在性问题，获得了一些新的可解性条件.
An Asymptotic for the Number of Solutions to Linear Equations in Prime Numbers from Specified Chebotarev Classes
symptotic for the Number of Solutions to Linear Equations Prime Numbers Specified Chebotarev Classes
2010/12/1
An Asymptotic for the Number of Solutions to Linear Equations in Prime Numbers from Specified Chebotarev Classes.
The Nyström method for functional quantization with an application to the fractional Brownian motion
integral equation Nyströ m method Gaussian semi-martingale functional quantization
2010/12/1
In this article, the so-called "Nyström method" is tested to compute optimal quantizers of Gaussian processes. In particular, we derive the optimal quantization of the fractional Brownian motion ...
On the Global Existence and Blowup Phenomena of Schrödinger Equations with Multiple Nonlinearities
Nonlinear Schr¨odinger equation Global existence Blow up in Nonlinear Schr¨odinger equation Global existence
2010/11/29
In this paper, we consider the global existence and blowup phenomena of the following Cauchy problem−iut = u − V (x)u + f(x, |u|2)u + (W ⋆ |u|2)u, x ∈ RN, t > 0,u(x, 0) = u0(x), x ...
Remarks on Scattering Properties of the Solution to a Nonlinear Schrödinger Equation with Combined Power-Type Nonlinearities
Nonlinear Schr¨odinger equation Global existence Scattering property
2010/11/29
In this paper, we consider the Cauchy problem of Nonlinear Schr¨odinger equationiut + u = λ1|u|p1u + λ2|u|p2u, t ∈ R, x ∈ RN u(0, x) = ϕ(x), x ∈ RN,where N ≥ 3, 0 < p1 < p2 < 4
N−2 , λ1 ...
The Rees product of posets
Rees product posets
2010/12/10
We determine how the flag f-vector of any graded poset changes under the Rees product with the
chain, and more generally, any t-ary tree. As a corollary, the M¨obius function of the Rees product of a...
Strong annihilating pairs for the Fourier-Bessel transform
Fourier-Bessel transform Hankel transform uncertainty principle
2010/12/1
The aim of this paper is to prove two new uncertainty principles for the Fourier-Bessel transform (or Hankel transform). The first of these results is an extension of a result of Amrein-Berthier-Bened...