Construction of Properly Posed Set of Nodes for Interpolation in the Πk(R2) Space
(1.College of Art and Science,HLJ August First Land Reclamation University,Daqing 163319,Heilongjiang China;2.Shenyang Command College of the Chinese Armed Police Forces,Shenyang 110113,China;3.School of Mathematics,Liaoning Normal University,Dalian 116029,Liaoning China)