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By applying game theory and contraction mapping theorem, a sufficient condition for the existence and uniqueness of Nash equilibrium in a multi-person non-cooperative game is proposed. Another implication in the sense of game theory is presented for the stability condition of supply-demand equilibrium in traditional economic theory. It can demonstrate the stability condition for supply-demand equilibrium in economic theory. So the stable supply-demand equilibrium of cobweb model in economics is in fact equivalent to the Nash equilibrium in game theory. That is a brand-new explanation for the conclusion in traditional economic theory.

应用博弈论中的有关理论与压缩映象定理寻求一类多ISP非合作对策纳什均衡存在、唯一的充分条件,给出了传统经济理论中供求均衡稳定性条件的对策论意义,证明了经济理论中的供求均衡稳定性条件;说明了经济学中蛛网模型的稳定供求均衡实际上就是对策理论中的纳什均衡,从而给出了传统经济理论中关于这一结论的新解释。

Are also given by constructing Lyapunov function. Finally, by applying the energy methods, Sobolev embedding theorems and bootstrap arguments, the global existence of nonnegative classical solutions to equations with homogeneous Neumann boundary value condition is proved when the space dimension is at most 5. Under certain conditions for the coefficients of the reaction functions, the convergence of the solutions is established for the system with large diffusion coefficients by constructing Lyapunov function.

的正平衡点全局渐近稳定的充分条件;最后,当空间维数不超过5时,应用能量估计、Sobolev嵌入定理和bootstrap技巧证明在齐次Neumann边值条件下非负古典解的整体存在性,并通过构造Lyapunov函数给出当反应函数的系数满足一定条件、扩散系数较大时该模型解的收敛性。

Aim at the shortage of vertically additive method by which we can't discuss forced oscillations of systems of partial functional differential equations,we directly use the oscillatory definition,Green's formula and boundary condition of homogeneous Neumann to change the oscillatory problem of solutions to a class of systems of quasilinear parabolic equations of neutral type into the problem of which functional differential inequality haven't eventually positive solution.

针对垂直相加法无法讨论泛函偏微分方程组的强迫振动性的不足,直接利用振动的定义、Green公式以及齐次Neumann边界条件把中立型抛物微分方程组的振动问题转化为泛函微分不等式不存在最终正解的问题,然后利用最终正解的定义及上下极限得到了在齐次Neumann边界条件下判别其所有解振动或全振动的充分条件

By using the above conclusions the nondegeneracy condition of systems without steady errors is analyzed successfully.

利用上面的结果,成功地分析了结构无静差问题的非蜕化条件;证明了非蜕化条件不但是实现结构无静差的充分条件之一,而且还是实现结构无静差的必要条件。

Later, we estimate our variational functional to get a nontrivial solution of the new equation and so the second solution for is obtained.

然后我们利用函数平移将原来的非齐次边界问题转化为奇次边界问题,验证了其对应的变分泛函满足不带条件的山路引理的两个条件,并给出了泛函临界点存在的一个充分条件,最后对具体的变分泛函进行估计,得到了新方程非平凡解的存在性结果,从而得到了原方程第二个正解的存在性结果。

And then obtained under some conditions of probability are some sufficient conditions for moment complete convergence for independent non-identically distributed random elements in a separable Banach space which are stochastically bounded by a positive random variable.

文章在随机元序列随机有界于某非负随机变量的条件下,引入慢变化函数l和选定的函数类S,在一定的概率性条件下,得到B值独立不同分布随机元序列矩完全收敛性的充分条件,推广了有关文献的结果。

In particular, the sufficiency implies a recent result by Akashi: every compact and totally disconnected dynamical system, expansive or not, can be conjugately embedded into a PSDS.

第五章主要给出了一个动力系统可以拓扑共轭嵌入到乘积符号动力系统中的充要条件,而且证明了该条件蕴涵着Akashi在文[2]中给出的主要结论,并由该条件推出了判断一个拓扑空间完全不连通的充分条件

Since the lengths of the line segments and the angles between line segments are treated as representation parameters, it is convenient to construct energy function and to deal with displacement and length constraints. Based on this advantage, a parametrical model for human body is proposed, which can easily produce human body models with different feature sizes. The above method is just suitable for polylines. Therefore, a generic deformation method for both discrete curves and surfaces is presented. The energy function is constructed by analyzing the relationship of the points before and after deformation. Together with the displacement constraints, the deformation problem is converted to a convex quadratic programming. A necessary condition for constraint points and a sufficient condition for the uniqueness of solution are given. The proposed method can be combined with skeleton-driven animation to control the deformation.

将线段长度与线段之间的角度作为表示参数,既有利于能量函数的构造,又便于处理位移约束和长度内蕴约束条件,利用这一优势,将其应用于三维人体的参数化建模,可以方便地产生具有不同特征尺寸参数的人体模型,由于这种方法只适用于折线变形,具有较大局限性,因此,本文进一步提出一种较通用的离散曲线曲面变形方法,通过分析变形前后的位置关系来构造能量函数,再加上位移约束条件,将变形问题转化为一个凸二次规划问题,并且给出了约束点应满足的必要条件及模型解唯一的充分条件,这种方法还可以与骨架驱动变形的思想相结合,能更好的控制变形。

Six kinds method the main body of a book is changed right away: Avianize the condition closing a problem; Conceal the conclusion closing a problem; According to condition or relation already giving examination questions,discuss the various conclusion; Give out a conclusion , explore sufficient condition making a conclusion be founded; Some similarities and differences of marriage partner burn comparatively; Comment that in having explored the various method of solving and conclusion , having been in progress in actual scene.

本文就变化的六种方法:弱化封闭题的条件;隐去封闭题的结论;根据已给题目的条件或关系,探讨多种结论;给出结论,寻求使结论成立的充分条件;比较某些对象的异同点;在实际情景中,寻求多种解法与结论,进行了论述。

The first result provides a more relaxed version of previously stated conditions that are sufficient for the existence of a quadratically stabilizing state feedback PDC controller.

第一个结果给出了以往结果的宽松条件。这种条件是存在二次型稳定状态反馈这类控制器的充分条件

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