Algorithms to Construct Normal Bases of Cyclic Number Fields
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Abstract Let K be a cyclic Galois extension of Q of finite degree. We give two algorithms to construct a normal basis of K over Q . Our proof uses the method developed by S. A. Stepanov and I.E. Shparlinskiy (1989, Mat. Sb.180, 1067-1072) in the case of finite fields. Another tool is a recent estimate of H. P. Schlickewei (Acta Math., to appear) for multiplicities of linear recurrence sequences.