All Stories

  1. A reduction theorem for the Isomorphism Problem of group algebras over fields

    Article • Journal of Pure and Applied Algebra, April 2024, Elsevier

    Ángel del Río

  2. Aritmethic lattices of SO(1,n) and units of group rings

    Article • Journal of Pure and Applied Algebra, November 2023, Elsevier

    Ángel del Río

  3. A classification of the finite 2-generator cyclic-by-abelian groups of prime-power order

    Article • International Journal of Algebra and Computation, June 2023, World Scientific Pub Co Pte Lt

    Ángel del Río

  4. Gruenberg–Kegel graphs: Cut groups, rational groups and the prime graph question

    Article • Forum Mathematicum, January 2023, De Gruyter

    Ángel del Río

  5. On Group Invariants Determined by Modular Group Algebras: Even Versus Odd Characteristic

    Article • Algebras and Representation Theory, December 2022, Springer Science + Business Media

    Ángel del Río

  6. Non-isomorphic 2-groups with isomorphic modular group algebras

    Article • Journal für die reine und angewandte Mathematik (Crelles Journal), December 2021, De Gruyter

    Ángel del Río

  7. The Modular Isomorphism Problem for two generated groups of class two

    Article • Indian Journal of Pure and Applied Mathematics, September 2021, Springer Science + Business Media

    Ángel del Río

  8. On the Zassenhaus Conjecture for Certain Cyclic-by-Nilpotent Groups

    Article • Mediterranean Journal of Mathematics, February 2020, Springer Science + Business Media

    Ángel del Río

  9. Zassenhaus conjecture on torsion units holds for SL(2, 

    Article • Journal of Group Theory, September 2019, De Gruyter

    Ángel del Río

  10. Partial augmentations power property: A Zassenhaus Conjecture related problem

    Article • Journal of Pure and Applied Algebra, September 2019, Elsevier

    Ángel del Río

  11. Zassenhaus Conjecture on torsion units holds for PSL(2,p) with p a Fermat or Mersenne prime

    Article • Journal of Algebra, August 2019, Elsevier

    Ángel del Río

  12. An algorithm to construct candidates to counterexamples to the Zassenhaus Conjecture

    Article • Journal of Algebra, November 2018, Elsevier

    Ángel del Río

  13. Cliff–Weiss inequalities and the Zassenhaus Conjecture

    Article • Journal of Algebra, August 2018, Elsevier

    Ángel del Río

  14. Group algebras whose units satisfy a Laurent polynomial identity

    Article • Archiv der Mathematik, July 2018, Springer Science + Business Media

    Ángel del Río

  15. Coherent unit groups of group rings

    Article • Mathematical Proceedings of the Cambridge Philosophical Society, June 2016, Cambridge University Press

    Ángel del Río

  16. Corrigendum to “On the Congruence Subgroup Problem for integral group rings” [J. Algebra 405 (2014) 1–34]

    Article • Journal of Algebra, August 2015, Elsevier

    Ángel del Río

  17. Group rings whose set of symmetric elements is Lie metabelian

    Article • Forum Mathematicum, January 2015, De Gruyter

    Ángel del Río

  18. Revisiting Poincaré’s Theorem on presentations of discontinuous groups via fundamental polyhedra

    Article • Expositiones Mathematicae, January 2015, Elsevier

    Ángel del Río

  19. On the Congruence Subgroup Problem for integral group rings

    Article • Journal of Algebra, March 2014, Elsevier

    Ángel del Río

  20. Bass units as free factors in integral group rings of simple groups

    Article • Journal of Algebra, February 2014, Elsevier

    Ángel del Río

  21. Families of Hadamard <formula formulatype="inline"> <tex Notation="TeX">$\BBZ_{2}\BBZ_{4}Q_{8}$</tex></formula>-Codes

    Article • IEEE Transactions on Information Theory, August 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Ángel del Río

  22. Group rings of finite strongly monomial groups: Central units and primitive idempotents

    Article • Journal of Algebra, August 2013, Elsevier

    Ángel del Río

  23. A SURVEY ON FREE SUBGROUPS IN THE GROUP OF UNITS OF GROUP RINGS

    Article • Journal of Algebra and Its Applications, May 2013, World Scientific Pub Co Pte Lt

    Ángel del Río

  24. Zassenhaus Conjecture for cyclic-by-abelian groups

    Article • Journal of the London Mathematical Society, February 2013, Wiley

    Ángel del Río

  25. Subgroup separability in integral group rings

    Article • Journal of Algebra, December 2011, Elsevier

    Ángel del Río

  26. BASS CYCLIC UNITS AS FACTORS IN A FREE GROUP IN INTEGRAL GROUP RING UNITS

    Article • International Journal of Algebra and Computation, June 2011, World Scientific Pub Co Pte Lt

    Ángel del Río

  27. Group code structures of affine-invariant codes

    Article • Journal of Algebra, January 2011, Elsevier

    Ángel del Río

  28. Rational Group Algebras of Finite Groups: From Idempotents to Units of Integral Group Rings

    Article • Algebras and Representation Theory, November 2010, Springer Science + Business Media

    Ángel del Río

  29. The gap between the Schur group and the subgroup generated by cyclic cyclotomic algebras

    Article • Israel Journal of Mathematics, March 2010, Springer Science + Business Media

    Ángel del Río

  30. An algorithm to compute the Wedderburn decomposition of semisimple group algebras implemented in the GAP package wedderga

    Article • Journal of Symbolic Computation, May 2009, Elsevier

    Ángel del Río

  31. Ring Isomorphism of Cyclic Cyclotomic Algebras

    Article • Algebras and Representation Theory, February 2009, Springer Science + Business Media

    Ángel del Río

  32. An intrinsical description of group codes

    Article • Designs Codes and Cryptography, January 2009, Springer Science + Business Media

    Ángel del Río

  33. The Schur group of an abelian number field

    Article • Journal of Pure and Applied Algebra, January 2009, Elsevier

    Ángel del Río

  34. Bicyclic units, Bass cyclic units and free groups

    Article • Journal of Group Theory, January 2008, De Gruyter

    Ángel del Río

  35. Group algebras of Kleinian type and groups of units

    Article • Journal of Algebra, December 2007, Elsevier

    Ángel del Río

  36. Every projective Schur algebra is Brauer equivalent to a radical abelian algebra

    Article • Bulletin of the London Mathematical Society, August 2007, Wiley

    Ángel del Río

  37. Groups of units of integral group rings commensurable with direct products of free-by-free groups

    Article • Advances in Mathematics, July 2007, Elsevier

    Ángel del Río

  38. Wedderburn decomposition of finite group algebras

    Article • Finite Fields and Their Applications, January 2007, Elsevier

    Ángel del Río

  39. The Group of Automorphisms of the Rational Group Algebra of a Finite Metacyclic Group

    Article • Communications in Algebra, October 2006, Taylor & Francis

    Ángel del Río

  40. Globalizations of partial actions on nonunital rings

    Article • Proceedings of the American Mathematical Society, August 2006, American Mathematical Society (AMS)

    Ángel del Río

  41. Zassenhaus Conjecture (ZC1) on torsion units of integral group rings for some metabelian groups

    Article • Archiv der Mathematik, May 2006, Springer Science + Business Media

    Ángel del Río

  42. On Monomial Characters and Central Idempotents of Rational Group Algebras

    Article • Communications in Algebra, December 2004, Taylor & Francis

    Ángel del Río

  43. Groups of units of integral group rings of Kleinian type

    Article • Transactions of the American Mathematical Society, October 2004, American Mathematical Society (AMS)

    Ángel del Río

  44. An algorithm to compute the primitive central idempotents and the Wedderburn decomposition of a rational group algebra

    Article • Journal of Symbolic Computation, June 2003, Elsevier

    Ángel del Río

  45. Semisimple strongly graded rings

    Article • Journal of Algebra, October 2002, Elsevier

    Yuval Ginosar, Ángel del Río

  46. COMPUTING LARGE DIRECT PRODUCTS OF FREE GROUPS IN INTEGRAL GROUP RINGS

    Article • Communications in Algebra, April 2002, Taylor & Francis

    Ángel del Río

  47. Groups generated by two bicyclic units in integral group rings

    Article • Journal of Group Theory, January 2002, De Gruyter

    Ángel del Río

  48. On the indecomposability of unit groups

    Article • Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg, December 2001, Springer Science + Business Media

    Ángel del Río

  49. Intermediate rings between matrix rings and Ornstein dual pairs

    Article • Archiv der Mathematik, October 2000, Springer Science + Business Media

    Ángel del Río

  50. Graded equivalences and Picard groups

    Article • Journal of Pure and Applied Algebra, September 1999, Elsevier

    Ángel del Río

  51. Actions of Picard Groups on Graded Rings

    Article • Journal of Algebra, August 1999, Elsevier

    Ángel del Río

  52. The isomorphism problem for incidence rings

    Article • Pacific Journal of Mathematics, February 1999, Mathematical Sciences Publishers

    Ángel del Río

  53. Article • Acta Mathematica Hungarica, January 1999, Springer Science + Business Media

    Ángel del Río

  54. Isomorphisms of row and column finite matrix rings

    Article • Proceedings of the American Mathematical Society, January 1997, American Mathematical Society (AMS)

    Ángel del Río

  55. Graded t-rings with finite support

    Article • Communications in Algebra, January 1993, Taylor & Francis

    Ángel del Río

  56. Separable functors revisited

    Article • Communications in Algebra, January 1990, Taylor & Francis

    Ángel del Río