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Turkish Journal of Mathematics

Abstract

Let $k$ be a positive integer that is relatively prime to the order of the Weyl group of a semisimple complex Lie algebra $\mf{g}$. We find the cardinality of the value sets of the folding polynomials $P_\mf{g}^k(\mb{x}) \in \Z[\mb{x}]$ of arbitrary rank $n \geq 1$, over finite fields. We achieve this by using a characterization of their fixed points in terms of exponential sums.

DOI

10.3906/mat-1812-64

Keywords

Lie algebra, Weyl group, fixed point, orbit, stabilizer

First Page

1407

Last Page

1413

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