On inverses of some permutation polynomials over finite fields of characteristic three

Yanbin Zheng,Fu Wang,Libo Wang, Wenhong Wei

Finite Fields and Their Applications（2019）

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摘要

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.

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关键词

Permutation polynomials, Inverses, Reversed Dickson polynomials

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