论文部分内容阅读
Let ι be a triangulation of a polygonal domain DR<sup>2</sup> with vertices V={v<sub>1</sub>:1≤i≤N,}andRS<sup>k</sup>(D,τ)={u∈C<sup>k</sup>(D):(T∈τ, u|<sub>τ</sub>is a rational function}.The purp