19 citations · 25 across the 17 of their papers we have counts for
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math.AC2020★ 2 cited
Extensions of absolute values on two subfields
Zhiguo Ding, Michael E. Zieve
We describe the absolute values on a field which simultaneously extend absolute values on two subfields. We also give a common generalization of many versions of Abhyankar's lemma…
math.NT2020★ 19 cited
Low-degree permutation rational functions over finite fields
Zhiguo Ding, Michael E. Zieve
We determine all degree-4 rational functions f(X) in F_q(X) which permute P^1(F_q), and answer two questions of Ferraguti and Micheli about the number of such functions and the num…