activity
20202026
most citedLow-degree permutation rational functions over finite fields

19 citations · 25 across the 17 of their papers we have counts for

collaborators

17 papers

math.NT2026

Several classes of permutation pentanomials

Zhiguo Ding

For each prime and each power , we present two large classes of permutation polynomials over $\F_{q^2}$ of the form which have at most five terms, where…

math.CO2026

A new construction of permutation polynomials over

Zhiguo Ding, Xu Song, Wei Xiong

We determine all permutation polynomials among several families of polynomials over for arbitrary prime powers . We obtain some new families of permutation po…

math.NT2025

Determination of all complete mappings of F_{q^2} of the form aX^{3q}+bX^{2q+1}+cX^{q+2}+dX^3

Zhiguo Ding, Wei Xiong, Michael E. Zieve

For each prime power q, we determine all polynomials over F_{q^2} of the form f(X) := aX^{3q}+bX^{2q+1}+cX^{q+2}+dX^3 which induce complete mappings of F_{q^2}, in the sense that e…

math.NT2025

Exceptional extensions of local fields and the Carlitz--Wan conjecture

Zhiguo Ding, Wei Xiong, Qifan Zhang

For any prime power , a polynomial $f(X)\in\F_q[X]$ is ``exceptional'' if it induces bijections of $\F_{q^k}$ for infinitely many ; this condition is known to be equivalent t…

math.NT2025

Some classes of permutation pentanomials

Zhiguo Ding, Michael E. Zieve

For each prime p other than 3, and each power q=p^k, we present two large classes of permutation polynomials over F_{q^2} of the form X^r B(X^{q-1}) which have at most five terms,…

math.NT2023

On sums of powers of consecutive squares over finite fields, and sums of distinct values of polynomials

Zhiguo Ding, Michael E. Zieve

For each odd prime power q, and each integer k, we determine the sum of the k-th powers of all elements x in F_q for which both x and x+1 are squares in F_q^*. We also solve the an…