activity
20112026
most citedRealisability problem in arrow categories

11 citations · 37 across the 17 of their papers we have counts for

collaborators

20 papers

math.RA2026

Commutative algebras are ideals of evolution algebras

Cristina Costoya, Amir Fernández Ouaridi, Antonio Viruel

We prove that every finite-dimensional commutative algebra can be embedded as an ideal of a finite-dimensional evolution algebra. We then determine the smallest possible dimension…

math.AT2026

Realizing additive monoids as mapping degree sets

Cristina Costoya, Vicente Muñoz, Bruno Valverde-Morales +1

We prove that mapping degree sets are stable under multiplication by finite subsets of containing and by sets obtained from additive submonoids of throu…

math.RA2026

On the Grothendieck Ring of Finite-Dimensional Non-Degenerate Evolution Algebras

Idrees Alshatnawi, Cristina Costoya, Antonio Viruel

We study the Grothendieck ring of finite-dimensional non-degenerate evolution algebras over a field , with addition induced by direct sum and multiplication induced by…

math.AT2025

Rigidifying simplicial complexes and realizing group actions

Cristina Costoya, Rafael Gomes, Antonio Viruel

We show that any action of a finite group on a finitely presentable group arises as the action of the group of self-homotopy equivalences of a space on its fundamental group. In do…

math.CT2025

Hom-counting functions, combinatorial categories and related problems

Antonio Ceres, Cristina Costoya, Antonio Viruel

Combinatorial categories satisfy a stronger form of Yoneda Lemma, namely, the isomorphism type of an object can be recovered by counting the number of homomorphisms from all other…

math.RA2024

Permutation representations and automorphisms of evolution algebras

Cristina Costoya, Pedro Mayorga, Antonio Viruel

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 evolu…