Permutation representations and automorphisms of evolution algebras

Abstract

We prove that the natural permutation representation of highly transitive finite groups cannot be realized as the full automorphism group of an idempotent, finite-dimensional evolution algebra acting on the set of lines spanned by its natural elements. Specifically, for any sufficiently large integer $n$ and $k\ge 4$, there does not exist an idempotent evolution algebra $X$ of dimension $n$ such that $\mathrm{Aut}(X)$ is isomorphic to a proper $k$-transitive subgroup of $S_n$. Nevertheless, we show that for any finite group $G$, any permutation representation $\hat{I}¾:G\to S_n$, and any field $\mathbb{k}$, there exists an idempotent, finite-dimensional evolution $\mathbb{k}$-algebra $X$ such that $\mathrm{Aut}(X)\cong G$, and the induced representation of $\mathrm{Aut}(X)$ on the natural idempotents of $X$ is equivalent to $\hat{I}¾$.

14 pages, no figures; v2: updated references, minor corrections