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On the Minimal Idempotents of Twisted Group Algebras of Cyclic 2-Groups

Jordan J. Epitropov·Todor Zh. Mollov·Nako A. Nachev
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Abstract

For a field $K$ of the second kind with respect to 2 and of characteristic different from 2, we consider the decomposition of the binomials $x^{2^n} - a$ into a product of irreducible factors over $K$ and find the explicit form of the minimal idempotents of the twisted group algebra $K^t< g>$ of a cyclic 2-group $ $ over $K$.

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Jordan J. Epitropov, Todor Zh. Mollov, Nako A. Nachev. 1998-06-23. On the Minimal Idempotents of Twisted Group Algebras of Cyclic 2-Groups. https://arxiv.org/abs/math/9806125

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