1) simplification of equation of curve of order 2
二阶曲线方程化简
3) second order quasilinear hyperbolic equations
二阶拟线性双曲型方程
1.
In the second part,as a basis of further study,we prove the existence and uniqueness of semi-global C~2 solution to general second order quasilinear hyperbolic equations,based on the theory of the semi-global C~1 solution to the mixed initial-boundary value problem for first order quasilinear hyperbolic systems.
第二部分,作为下一步研究精确边界能控性的基础,在一阶拟线性双曲组混合初边值问题半整体C~1解理论的基础上,对一般二阶拟线性双曲型方程建立半整体C~2解的理论。
2.
In the second part,as a basis of further study,we prove the existence and uniqueness of semiglobal C~2 solution to general second order quasilinear hyperbolic equations,based on the theory of the semi-global C~1 solution to the mixed initial-boundary value problem for first order quasilinear hyperbolic systems.
第二部分,作为下一步研究精确能观性的基础,在一阶拟线性双曲组混合初边值问题半整体C~1解理论的基础上,对一般的二阶拟线性双曲型方程建立半整体C~2解的理论。
3.
Based on the theory of the semi-global C1 solution to the mixed initial-boundary value problem for first order quasilinear hyperbolic systems,the exact observability is established for general second order quasilinear hyperbolic equations with general nonlinear boundary conditions.
在一阶拟线性双曲组混合初边值问题半整体C1解理论的基础上,本文针对一般二阶拟线性双曲型方程的特征根在平衡态附近的不同分布情况,在具有一般边界条件的情况下,分别得到了相应的精确能观性及能观不等式。
4) Second order hyperbolic equation
二阶双曲方程
1.
The congvergence analysis for the second order hyperbolic equation with the P1-nonconforming finite element is discussed.
研究了二阶双曲方程的P1-非协调元的收敛性,利用该单元的特殊性质,并通过新的技巧,给出了相应的误差估计。
2.
The first order Raviart-Thomas mixed finite element approximation to second order hyperbolic equationwith Dirchlet boundary value problem is discussed.
利用积分恒等式和插值后处理技术,对具有Dirchlet边值问题的二阶双曲方程,采用一阶Raviart-Thomas混合有限元,得到了整体超收敛,并给出了后验误差估计。
3.
Galerkin approximation of Adini element for second order hyperbolic equation on anisotropic meshes is studied.
在各向异性网格下研究Adini元对二阶双曲方程的Galerkin逼近,在精确解u∈H5(Ω)下,得到了能量模意义下O(h3。
5) second order hyperbolic equations
二阶双曲型方程
1.
In this paper,we consider the spline solution to the second order hyperbolic equations,then we prove their existence and convergence.
从二元样条空间 S12 (Δ(2 )mn) 的理论出发 ,构造了一类新的差分格式 ,且利用它得到了一类二阶双曲型方程的样条解 ,且证明了这样的解的存在性、唯一性和收敛性问题 。
6) The Simplification of Conic
二次曲线的化简
补充资料：二阶线性齐次微分方程
二阶线性微分方程的一般形式为
ay"+by'+cy=f(1)
其中系数abc及f是自变量x的函数或是常数。函数f称为函数的自由项。若f≡0，则方程（1）变为
ay"+by'+cy=0（2）
称为二阶线性齐次微分方程，而方程（1）称为二阶线性非齐次微分方程。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条