equation of sixth degree

Based on the repurchasing rate of government bonds in the Shanghai stock market,the nonparametric term structure model of interest rates has been estimated by using four different kernel functions: the Gauss kernel function,the Epanechnikov kernel function,a quartic kernel function and a six-power kernel function.

给出了用非参数方法估计利率期限结构的过程,并以上海证券交易所的国债回购利率数据为样本,采用4种不同核函数:高斯核、抛物线核、四次方核和六次方核对利率期限结构模型进行估计。

In riser design of steel casting, modulus method is the most widely used method, and the cubic equation method is a most close method in modulus method.

在铸钢件冒口设计中 ,模数法是一个广泛应用的计算方法 ,三次方程解析法是模数法中较为严密的计算方法。

In this paper,the author completely studied on the roots of the cubic equation over the field F .

完整地给出了F(设F是一个pk 元域 )上的三次方程根的状况 :在F中有且仅有一个根 ,或一个单根与一个二重根 ,或三个互异的根 ,或没有根 。

Let F be a field of 3 k elements and x 3+ax 2+bx+c=0 be a cubic equation over the field F.

F是一个 3k 元域 ,证明了F上的三次方程x3+ax2 +bx +c =0在F中有一根 ,或一根与二重根 ,或三个互异的根 ,或没有根 。

It is summed up the high equation problem for the complex hydraulic calculation in actual project.

将实际工程中的复杂水力计算问题归纳为对高次方程的求解,并提出快速、正确解决这类问题的数值方法——中点迭代法,对解决实际工程问题具有指导意义。

A cubic expression, curve, or equation.

三次表达式，三次曲线，三次方程

On the Cubic Equations over a Field of p~k(p>3)Elements;

关于p~k(p>3)元域上的三次方程

Stability of the cubic functional equation in a non-Archimedean space

Non-Archimedean空间中三次方程的稳定性

The Roots of the Cubic Equations over a Field of P~ K(P>3) Elements;

P~K(P>3)元域上的三次方程根的状况

A Solution to Three Types Continuance Linear Even Differential Equation of Two Times Complete Cubic;

二次方三项式线性齐次微分方程的解法

In this paper, the problem of limit cycle for a cubic system is studied.

讨论三次系统(方程式略)的极限环问题。

On the Solution of the Third Order Diophantine Equation;

关于三次Diophantine方程的求解问题

A Positive Integral Solution to the Indefinite Cubic Equation with 36 Equality Signs;

具有三十六个等号的三次不定方程的正整数解

Properties of Solutions of the Third Order Polynomial-like Iterative Equation and Generalization of Functional Equations for the Square Root Spiral;

三次多项式型迭代方程解的性质与二次螺线根方程的推广

The Solution of the Linear Differential Equation that Coefficient Contain Completely Cubic Type Three Function;

完全立方型三次函数为系数的线性微分方程

THE BOUNDARY CONTOUR METHOD WITh CUBIC ELEMENTS BASED ON EQUIVALENT BIE FOR 2-D PROBLEMS

平面问题等价边界积分方程的三次边界轮廓法

Small Solutions of Cubic Equations with Prime Variables in Arithmetic Progressions;

三次素变数方程在算术数列中解的上界估计

Solvability of the general three-dimensional non-homogeneous partial differential equations;

一般三维非齐次偏微分方程的可解性条件

Solutions of Three New Second-order Quadratic Differential Equations and Their General Solution Formula;

新三类二阶二次微分方程的解法及其通解公式

The Three Sufficient Conditions of Quadrature about Linear Homogenous Differential Equation of Second-order Variable Coefficient;

二阶变系数线性齐次方程的三个可积充分条件

A Cubic-Spline Difference Scheme of Higher Order Accuracy for Heat Conduction Equation;

热传导方程的高精度三次样条差分格式

An Analysis of the Positive Integral Solution to the Indefinite Cubic Equation with 10 Equality Signs;

具有十个等号的三次不定方程的正整数解

Sturm Comparison Theorem of Solution for the Third Order Homogeneous Linear Differential Equations

三阶线性齐次微分方程解的Sturm比较定理