通过投影型插值展开,在解不光滑(u∈H^1)时,定义一种新的误差阶,并利用此误差研究Green函数的一个超逼近性质.
For no-smooth solution error order was defined by projection (u∈ H^1), a new kind of type interpolation expansion. The super-approximation of Green function was discussed .