考虑了一类具材料阻尼的非线性双曲型方程初边值问题整体解的不存在性。
Concerns with the nonexistence of global solutions to the initial boundary value problem for a nonlinear hyperbolic equation with material damping.
考虑了一类具材料阻尼的非线性双曲型方程初边值问题整体解的不存在性。
In this paper, the nonexistence of global solutions to a semi-linear Kirchhoff equation with dynamic boundary conditions is considered.
该差值即是存在重力,与不存在重力方程的解之差。
Well, that is the difference between the equation with gravity and without gravity.
佩雷尔曼的定理远远超过证明这些“不存在”的断言，正如怀尔斯证明的定理所告诉你的东西要多于一类方程不存在整数解这个结论。
Perelman's theorem goes far beyond proving this "non-existence" claim, just as Wiles' theorem tells you much more than non-existence of integer solutions of certain equations.
这类问题不存在一般意义的最优解，更不存在唯一的最优解。
There is no optimal solution to those problems, lest unique solutions.
用首次积分法，讨论了带奇异边界条件的非线性常微分方程解的存在性、不存在性和唯一性。
By the first integral method, the existence, uniqueness and nonexistence of solutions for some nonlinear ordinary differential equations with singular boundary condition are discussed.
在无功优化计算中，由于严格的节点电压限制、网络拓扑的变化或无功电源的不足等多种原因可能会导致原问题不存在最优解。
In reactive power optimization, the solution infeasibility may arise due to a variety of reasons such as restrictive voltage limits, change in network topology, and shortage of reactive power sources.
另外，R BF神经网络是一种局部逼近网络，问题有唯一确定的解，不存在BP网中所遇到的局部极小值问题。
The RBF nerve network is one kind partial approaches network and the question has the only determination solution, moreover, the BP net often meets the partial minimum problem.
这个结果导致捕食食饵系统的持久性、平凡解和所有半平凡解的不稳定性和不存在非一致平衡解。
The result leads to the permanence of the prey-predator systems, the instability of the trivial and all forms of semitrivial solutions, and the nonexistence of nonuniform steady-state solutions.
根据问题的最优性和可行性提出一新的区域删除准则以排除问题（P）的可行域中不存在全局最优解的部分，结合区域删除准则和分支定界理论给出新算法。
New region-deleting principles are proposed based on the optimality and feasibility of the problem so as to delete the subregion without containing the optimal solutions of the problem(P).
他们说，只要人类对生态系统的认识还是一知半解的，那就不存在对栖息地的安全缩小；因此也就谈不上什么保险策略了。
They say there is no safe diminution of habitat as long as human understanding of ecology is as sketchy as it is a fallback strategy is unthinkable.
利用凸性分析方法，在方程具有边界条件和正初始能量情况下得到整体解不存在的充分条件。
By making use of variational methods, we obtain two positive solutions ofp(x)-Laplace equation, which generlizes the corresponding relusts of Laplace equation.
利用凸性分析方法，在方程具有边界条件和正初始能量情况下得到整体解不存在的充分条件。
By making use of variational methods, we obtain two positive solutions ofp(x)-Laplace equation, which generlizes the corresponding relusts of Laplace equation.
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