Acta Mathematica Vietnamica



Linear Difference Equations and Periodic Sequences over Finite Fields
Dang Vu Giang



First, we study linear equations over finite fields in general. An explicit formula for a common period is found for every solution of a linear difference equation over a finite field. It will help to estimate the p-adic modulus of polynomial roots. Second, we focus our attention on periodic sequences over finite fields and Hamiltonian cycles in de Bruijn directed graph.

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