Envíos recentes

  • H-Galois extensions with normal basis for weak Hopf algebras 

    Alonso Álvarez, José Nicanor; Fernández Vilaboa, José Manuel; González Rodríguez, Ramón (International Electronic Journal of Algebra, 2017)
    Let H be a weak Hopf algebra and let A be an H-comodule algebra with subalgebra of coinvariants AH. In this paper we introduce the notion of H-Galois extension with normal basis and we prove that AH ,→ A is an H-Galois ...
  • The group of strong Galois objects associated to a cocommutative Hopf quasigroup 

    Alonso Álvarez, José Nicanor; Fernández Vilaboa, José Manuel; González Rodríguez, Ramón (Korean Mathematical Society, 2017)
    Let H be a cocommutative faithfully flat Hopf quasigroup in a strict symmetric monoidal category with equalizers. In this paper we introduce the notion of (strong) Galois H-object and we prove that the set of isomorphism ...
  • Isoparametric hypersurfaces in Damek–Ricci spaces 

    Díaz Ramos, José Carlos; Domínguez Vázquez, Miguel (Elsevier, 2013-06-01)
    We construct uncountably many isoparametric families of hypersurfaces in Damek-Ricci spaces. We characterize those of them that have constant principal curvatures by means of the new concept of generalized Kähler angle. ...
  • A method for validating Rent’s rule for technological and biological networks 

    Alcalde Cuesta, Fernando; González Sequeiros, Pablo; Lozano Rojo, Álvaro (Springer Nature, 2017-07-14)
    Rent’s rule is empirical power law introduced in an effort to describe and optimize the wiring complexity of computer logic graphs. It is known that brain and neuronal networks also obey Rent’s rule, which is consistent ...
  • Exploring the topological sources of robustness against invasion in biological and technological networks 

    Alcalde Cuesta, Fernando; González Sequeiros, Pablo; Lozano Rojo, Álvaro (Nature Publishing Group, 2016-02-10)
    For a network, the accomplishment of its functions despite perturbations is called robustness. Although this property has been extensively studied, in most cases, the network is modified by removing nodes. In our approach, ...

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