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arXiv · 2110.14487

Semi-magic matrices for dihedral groups

Robert W. Donley Jr
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Abstract

After reviewing the group structure and representation theory for the dihedral group $D_{2n},$ we consider an intertwining operator $\Phi_\rho$ from the group algebra $\mathbb{C}[D_{2n}]$ into a corresponding space of semi-magic matrices. From this intertwining operator, one obtains the generating function for enumerating the associated semi-magic squares with fixed line sum and an algebra extending the circulant matrices. While this work complements the approach to $D_{2n}$ through permutation polytopes, we use only methods from representation theory.

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Robert W. Donley Jr. 2021-10-27. Semi-magic matrices for dihedral groups. https://arxiv.org/abs/2110.14487

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