2024/07/22 by Yolanda Cabrera Casado, Casado, Yolanda Cabrera, María Inez Cardoso Gonçalves +9 · 1 citation
Computer Science · Mathematics · #16T05 #17A36 #17A60 #17D92 #Advanced Topics in Algebra #Algebraic structures and combinatorial models #FOS: Mathematics #Matrix Theory and Algorithms #Rings and Algebras (math.RA)
paper · pdf · doi:10.48550/arxiv.2407.15769
openalex publication_date 2024/07/22 · openalex created_date 2024/09/12 · openalex updated_date 2026/08/01
In this paper, we establish a connection between evolution algebras of dimension two and Hopf algebras, via the algebraic group of automorphisms of an evolution algebra. Initially, we describe the Hopf algebra associated with the automorphism group of a 2-dimensional evolution algebra. Subsequently, for a 2-dimensional evolution algebra A over a field K, we detail the relation between the algebra associated with the (tight) universal associative and commutative representation of A, referred to as the (tight) p-algebra, and the corresponding Hopf algebra, H, representing the affine group scheme Aut(A). Our analysis involves the computation of the (tight) p-algebra associated with any 2-dimensional evolution algebra, whenever it exists. We find that Aut(A)=1 if and only if there is no faithful associative and commutative representation for A. Moreover, there is a faithful associative and commutative representation for A if and only if H\not≅ K and char (K)≠ 2, or H\not≅ K(ε) (the dual numbers algebra) and H\not≅ K in case of char (K)= 2. Furthermore, if A is perfect and has a faithful tight p-algebra, then this p-algebra is isomorphic to H (as algebras). Finally, we derive implications for arbitrary finite-dimensional evolution algebras.