Now showing items 21-25 of 25

    • NUMBER THEORY 

      Río Doval, Ana (Universitat Politècnica de Catalunya, 2021-01)
      Exam
      Restricted access to the UPC academic community
    • On the Galois correspondence theorem in separable Hopf Galois theory 

      Crespo Vicente, Teresa; Río Doval, Ana; Vela del Olmo, Maria Montserrat (2016-01)
      Article
      Open Access
      In this paper we present a reformulation of the Galois correspondence theorem of Hopf Galois theory in terms of groups carrying farther the description of Greither and Pareigis. We prove that the class of Hopf Galois ...
    • Problemes Àlgebra abstracta 

      Quer Bosor, Jordi; Río Doval, Ana (Universitat Politècnica de Catalunya, 2001)
      Lecture notes
      Open Access
    • Problemes Àlgebra Abstracta 

      Quer Bosor, Jordi; Río Doval, Ana (Universitat Politècnica de Catalunya, 2001)
      Lecture notes
      Open Access
    • The Hopf Galois property in subfield lattices 

      Crespo Vicente, Teresa; Río Doval, Ana; Vela del Olmo, Maria Montserrat (2016-01-01)
      Article
      Open Access
      Let K/k be a finite separable extension, n its degree and (K) over tilde /k its Galois closure. For n <= 5, Greither and Pareigis show that all Hopf Galois extensions are either Galois or almost classically Galois and they ...