Generalization of a Theorem of Carlitz
classification
🧮 math.NT
keywords
carlitzformulairreduciblenumberpolynomialsargumentcombinatorialexplicit
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We generalize Carlitz' result on the number of self reciprocal monic irreducible polynomials over finite fields by showing that similar explicit formula hold for the number of irreducible polynomials obtained by a fixed quadratic transformation. Our main tools are a combinatorial argument and Hurwitz genus formula.
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