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Permutation polynomials have been a subject of study for a long time and have applications in many areas of science and engineering. However, only a small number of specific classes of permutation polynomials are described in the literature so far. In this paper we present a number of permutation trinomials over finite fields, which are of different forms.(More)
Four recursive constructions of permutation polynomials over GF(q 2) with those over GF(q) are developed and applied to a few famous classes of permutation polynomials. They produce infinitely many new permutation polynomials over GF(q 2 ℓ) for any positive integer ℓ with any given permutation polynomial over GF(q). A generic construction of permutation(More)