Optimal normal bases
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Shuhong Gao; Hendrik W. Lenstra
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Article
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1992
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Springer
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English
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Let K C L be a finite Galois extension of fields, of degree n. Let G be the Galois group, and let (act)o~G be a normal basis for L over K. An argument due to Mullin, Onyszchuk, Vanstone and W'flson (Discrete Appl. Math. 22 (1988/89), 149-161) shows that the matrix that describes the map x ~ otx on t