The irreducibility of compositions of linear polynomials over a finite field
Corrigendum: "Galois groups of trinomials" (Acta Arith. 54 (1989), 43-49)
Incomplete character sums and a special class of permutations
We present a method of bounding incomplete character sums for finite abelian groups with arguments produced by a first-order recursion. This method is particularly effective if the recursion involves a special type of permutation called an -orthomorphism. Examples of -orthomorphisms are given.
Double transitivity of Galois groups of trinomials
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