On inverses of some permutation polynomials over finite fields of characteristic three
arXiv:1904.03029 · doi:10.1016/j.ffa.2020.101670
Abstract
By using the piecewise method, Lagrange interpolation formula and Lucas' theorem, we determine explicit expressions of the inverses of a class of reversed Dickson permutation polynomials and some classes of generalized cyclotomic mapping permutation polynomials over finite fields of characteristic three.