本研究采用语料库证据支持的中介语对比的方法,重点考察了中国大学生使用三个形容词"common,ordinary,average"和两个名词"role,tea"各自的"形容词-名词"搭配的特征... 尹小玲 - 《湖南科技大学》 被引量: 6发表: 2009年 Average of Ordinary Differential Equations of the Second Order with Variable Factors Linea...
【电子书分享】常微分方程:定性理论-ordinary di this textbook provides a comprehensive introduction to the qualitative theory of ordinary differential equations. ...in particular, it provides brief introductions to bifurcation theory, center manifolds, normal forms and ...分享回复 1云南财经大学中华职.....
Hidden symmetries of ordinary differential equations (ODEs) are studied with nonlocal group generators. General forms are given for an exponential nonlocal... B Abraham-Shrauner - 《Ima Journal of Applied Mathematics》 被引量: 71发表: 1996年 The dressing chain of discrete symmetries and proliferat...
Regular Expansions for Ordinary and Partial Differe... JK Kevorkian,JD Cole - 《Applied Mathematical Sciences》 被引量: 1301发表: 1996年 Singular Perturbations of Nonlinear Degenerate Parabolic PDEs: a General Convergence Result The main result of the paper is a general convergence theorem for the ...
The numerical methods for solving ordinary differential equations are methods of integrating a system of first order differential equations, since higher order ordinary differential equations can be reduced to a set of first order ODE's. For example, An order ordinary differential can be similarly ...
problem solving equations fractions exactness of a chemical reaction converting mixed fractions into a decimal How to resolve nonlinear ordinary differential equations vertex formula from 2 points learn algebra free common compound separated by sublimation arithmatic &logic unit learning materials+...
A fixed point theorem for contraction type maps in partially ordered metric spaces and application to ordinary differential equations We present a fixed point theorem for generalized contraction in partially ordered complete metric spaces. As an application, we give an existence and uniqu... A Amini...
We demonstrate that some authors look for the solitary wave solutions of nonlinear ordinary differential equations and do not take into account the well - known general solutions of these equations. We illustrate several cases when authors present some functions for describing solutions but do not ...
A set of ordinary differential equations used to represent population dynamics based on experimentally inferred species interaction parameters. Fundamental niche The entire set of environmental conditions in which an organism can survive and reproduce (that is, an organism’s niche in the absence of int...
Existence and uniqueness of fixed point in partially ordered sets and applications to ordinary differential equations Acta Math. Sin. (English Ser.), 23 (12) (2007), pp. 2205-2212 CrossrefView in ScopusGoogle Scholar [23] D. O’Regan, A. Petruşel Fixed point theorems for generalized con...