搜索结果: 151-165 共查到“理学 existence”相关记录231条 . 查询时间(0.218 秒)
Global existence of smooth solutions to two-dimensional compressible isentropic Euler equations for Chaplygin gases
Chaplygin gases compressible Euler equations irrotational flow null condition Cauchy problem smooth solution
2018/4/20
In this paper we investigate the two-dimensional compressible isentropic Euler equations for Chaplygin gases. Under the assumption that the initial data is close to a constant state and the vorticity ...
New Evidence for the Existence of Gutenberg's Asthenosphere Channel
New Evidence Existence Gutenberg's Asthenosphere Channel
2009/6/19
New Evidence for the Existence of Gutenberg's Asthenosphere Channel.
Existence of Almost Periodic Solutions For a Class of Nonlinear Duffing Equations
Duffing equations nonlinear almost periodic Stepanov almost periodic exponential dichotomy
2009/6/16
In this paper, we discuss the existence of almost periodic solutions for a class of nonlinear
Duffing equations. Some new theorems are established to ensure that the existence
of almost periodic sol...
CO-EXISTENCE OF TWO PLASMA PHASES IN SOLAR AND AGN CORONAS
Active Galactic Nuclei CO-EXISTENCE
2009/3/26
Here we have juxtaposed two distant cosmic locations of the Sun
and AGN where neutral hydrogen appears in a close connection with hot coronas.
Besides the solar photosphere, chromosphere and promine...
Existence and regularity of optimal solution for a dead oil isotherm problem
optimal control dead oil isotherm model existence regularity
2009/3/3
We study a system of nonlinear partial di®erential equations
resulting from the traditional modelling of oil engineering within the frame-
work of the mechanics of a continuous medium. Existence...
Existence of Regular Solutions for a One-Dimensional Simplified Perfect-Plastic Problem with a Unilateral Gradient Constraint
Regular Solutions Unilateral Gradient Constraint One-Dimensional Simplified Perfect-Plastic Problem
2009/2/5
This work is devoted to the study of the existence of "regular" solutions for a one-dimensional problem with unilateral constrained gradient in Perfect-Plasticity.
The particularity of this problem ...
On a New Result on the Existence of Zeros due to Ricceri
Zeros dual space Ricceri arbitrary topological spaces
2009/1/22
The purpose of this short paper is to extend a recent result of Ricceri, on the existence of zeros of functions with values in a dual space, to the existence of solutions to inclusions with values in ...
On the Existence of a Fully Developed Wind-Sea Spectrum
Wind-Sea Spectrum wave-wave interaction equilibrium solution
2009/1/20
We consider the energy transfer equation for well-developed ocean waves under the influence of wind, and study the conditions for the existence of an equilibrium solution in which wind input, wave-wav...
Existence and Uniqueness of Solution of Unilateral Problems with $L^{1}$ Data
Uniqueness of Solution $L^{1}$ Data Unilateral Problems
2009/1/20
We prove an existence and uniqueness theorem for the solution of unilateral problems with $L^{1}$ data.
Existence of a Continuous Solution of Parametric Nonlinear Equation with Constraints
Continuous Solution Parametric Nonlinear Equation Constraints
2009/1/16
Combining a consequence of the Michael continuous selection theorem and an iterative scheme we prove the existence of a continuous solution of a parametric equation with constraints. An inverse functi...
Euler-Lagrange Inclusions and Existence of Minimizers for a Class of Non-Coercive Variational Problems
Calculus of variations existence Euler-Lagrange inclusions radially symmetric solutions non-coercive problems
2009/1/13
We are concerned with integral functionals of the form
J(v)\doteq \int_{B_R^n} \left[f(|x|,|\nabla v(x)|)+h(|x|,v(x))\right] dx,
defined on $W^{1,1}_0(B_R^n, \mathbb{R}^m)$, where $B_R^n$ is the b...
Existence and regularity of optimal solution for a dead oil isotherm problem
optimal control dead oil isotherm model existence regularity
2009/1/6
We study a system of nonlinear partial di®erential equations
resulting from the traditional modelling of oil engineering within the frame-
work of the mechanics of a continuous medium. Existence...
The existence of countably many positive solutions for a system of second order four-point boundary value problems with p-Laplacian operator
Positive solution Fixed point p-Laplacian
2010/9/14
The existence of countably many positive solutions for a system of second order four-point boundary value problems with p-Laplacian operator
Sufficient and necessary conditions for existence of positive solutions to p-Laplacian systems
p-Laplacian operator variational method sub and supersolutionfor the system
2010/9/10
In this work, we are concerned with the study of existence of positive solutions to some p-Laplacian systems on an unbounded domain, with non-linearities without a necessary variational character. Und...
On the existence of solutions of boundary value problems for a class of high order operator-differential equations
Hilbert space existence of generalized solution
2010/9/10
In the paper we give the sufficient conditions on the existence and uniqueness of generalized solutions a boundary value problems of one class of high order operator operator-differential equations at...
