3 citations · 5 across the 9 of their papers we have counts for
9 papers
Presentations of Groups Acting Discontinuously on Direct Products of Hyperbolic Spaces
Eric Jespers, Ann Kiefer, Ángel del Río
The problem of describing the group of units of the integral group ring of a finite group has attracted a lot of attention and provid…
Families of Hadamard Z2Z4Q8-codes
Ángel del Rio, Josep Rifà
A Z2Z4Q8-code is a non-empty subgroup of a direct product of copies of Z_2, Z_4 and Q_8 (the binary field, the ring of integers modulo 4 and the quaternion group on eight elements,…
Subgroup separability in integral group rings
Á. del Río, M. Ruiz Marín, P. Zalesski
We give a list of finite groups containing all finite groups such that the group of units of the integral group ring is subgroup separable. There are only two t…
Group code structures on affine-invariant codes
Jose Joaquin Bernal, Angel del Rio, Juan Jacobo Simon
A group code structure of a linear code is a description of the code as one-sided or two-sided ideal of a group algebra of a finite group. In these realizations, the group algebra…
Involutive Yang-Baxter Groups
Ferran Cedo, Eric Jespers, Angel del Rio
In 1992 Drinfeld posed the question of finding the set theoretic solutions of the Yang-Baxter equation. Recently, Gateva-Ivanova and Van den Bergh and Etingof, Schedler and Solovie…
The gap between the Schur group and the subgroup generated by cyclic cyclotomic algebras
Allen Herman, Gabriela Olteanu, Angel del Rio
Let be an abelian extension of the rationals. Let be the Schur group of and let be the subgroup of generated by classes containing cyclic cyclotomic a…