ORTHOGONAL SYSTEM OF POLYNOMIALS IN n INDETERMINATES OVER FINITE FIELDS
有限域上的n元正交多项式组

Permutation polynomials play an important role in communication field. As a generalization, the concept of orthogonal system of polynomials in n indeterminates over finite field was introduced by R.Lidl and H.Niederriter(1983). In this paper, this problem is discussed and several results are obtained.