• Fam oculta a Catalunya: un obstacle en la igualtat d'oportunitats 

      Bermejo Sánchez, Sergi; Crespo, Teresa (2017-05-25)
      Report de recerca
      Accés obert
      L’informe (PDF) –fruit de la col·laboració entre ECAS i el professor de la Universitat Politècnica de Catalunya Sergi Bermejo, especialista en anàlisi intel·ligent de dades– pretén augmentar el nivell de consciència sobre ...
    • Inducing braces and Hopf Galois structures 

      Crespo, Teresa; Gil Muñoz, Daniel; Río Doval, Ana; Vela del Olmo, Maria Montserrat (2023-09-01)
      Article
      Accés obert
      Let p be a prime number and let n be an integer not divisible by p and such that every group of order np has a normal subgroup of order p. (This holds in particular for .) Under these hypotheses, we obtain a one-to-one ...
    • Non-isomorphic Hopf Galois structures with isomorphic underlying Hopf algebras 

      Crespo, Teresa; Río Doval, Ana; Vela del Olmo, Maria Montserrat (2014-10-30)
      Article
      Accés restringit per política de l'editorial
      We give a degree 8 non-normal separable extension having two non-isomorphic Hopf Galois structures with isomorphic underlying Hopf algebras.
    • On the Galois embedding problem associated to the universal central extension of the alternating group of degree 6 

      Crespo, Teresa; Vela del Olmo, Maria Montserrat (2013)
      Article
      Accés obert
      We obtain an explicit expression for the obstruction to the solvability of the Galois embedding problem associated to the universal central extension of the alternating group of degree 6.