
arXiv: 2008.12853
A self-dual map $G$ is said to be \emph{antipodally self-dual} if the dual map $G^*$ is antipodal embedded in $\mathbb{S}^2$ with respect to $G$. In this paper, we investigate necessary and/or sufficient conditions for a map to be antipodally self-dual. In particular, we present a combinatorial characterization for map $G$ to be antipodally self-dual in terms of certain \emph{involutive labelings}. The latter lead us to obtain necessary conditions for a map to be \emph{strongly involutive} (a notion relevant for its connection with convex geometric problems). We also investigate the relation of antipodally self-dual maps and the notion of \emph{ antipodally symmetric} maps. It turns out that the latter is a very helpful tool to study questions concerning the \emph{symmetry} as well as the \emph{amphicheirality} of \emph{links}.
Graph theory, self-dual maps, FOS: Mathematics, Knot theory, Mathematics - Combinatorics, Combinatorics (math.CO), Relations of low-dimensional topology with graph theory, antipodality
Graph theory, self-dual maps, FOS: Mathematics, Knot theory, Mathematics - Combinatorics, Combinatorics (math.CO), Relations of low-dimensional topology with graph theory, antipodality
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