For a class of two-point boundary value problems, using projection type interpolation we proved there are κ + 1, κ u-ultraconvergence points in each element for k degree finite element solution and its derivative, r...For a class of two-point boundary value problems, using projection type interpolation we proved there are κ + 1, κ u-ultraconvergence points in each element for k degree finite element solution and its derivative, respectively. The computing formulars are given.展开更多
本文我们讨论了具有 m 阶连续导数的2m 次多项式样条插值,得到了它的逐项渐近展开式,并且找到了一些超收敛点.给定[a,b]的一个等距分划:a=x0<x1<…<xN=b,记h=xi 1-xi,xi+(1/2)=1/2(xi+xi+1),f(xi+(1/2))=fi(?)(1/2),fj...本文我们讨论了具有 m 阶连续导数的2m 次多项式样条插值,得到了它的逐项渐近展开式,并且找到了一些超收敛点.给定[a,b]的一个等距分划:a=x0<x1<…<xN=b,记h=xi 1-xi,xi+(1/2)=1/2(xi+xi+1),f(xi+(1/2))=fi(?)(1/2),fj(x?)=fij.记 S2mm(Δ)为具有 m 阶连续导数的2m 次多项式样条空间.我们考虑满足下述条件的2m 次样条插值:展开更多
文摘For a class of two-point boundary value problems, using projection type interpolation we proved there are κ + 1, κ u-ultraconvergence points in each element for k degree finite element solution and its derivative, respectively. The computing formulars are given.
文摘本文我们讨论了具有 m 阶连续导数的2m 次多项式样条插值,得到了它的逐项渐近展开式,并且找到了一些超收敛点.给定[a,b]的一个等距分划:a=x0<x1<…<xN=b,记h=xi 1-xi,xi+(1/2)=1/2(xi+xi+1),f(xi+(1/2))=fi(?)(1/2),fj(x?)=fij.记 S2mm(Δ)为具有 m 阶连续导数的2m 次多项式样条空间.我们考虑满足下述条件的2m 次样条插值: