Now showing items 1-4 of 4

    • Hyperelliptic parametritzations of Q-curves 

      Bars Cortina, Francesc; González Rovira, Josep; Xarles Ribas, Xavier (2020-07-24)
      Article
      Open Access
      For a square-free integer N, we present a procedure to compute Q-curves parametrized by rational points of the modular curve X* 0 (N) when this is hyperelliptic.
    • Hyperelliptic parametrizations of Q -curves 

      Bars Cortina, Francesc; González Rovira, Josep; Xarles Ribas, Xavier (2020-07-24)
      Article
      Open Access
      For a square-free integer N, we present a procedure to compute Q-curves parametrized by rational points of the modular curve X∗0(N) when this is hyperelliptic
    • Rational periodic sequences for the Lyness recurrence 

      Gasull Embid, Armengol; Mañosa Fernández, Víctor; Xarles Ribas, Xavier (2010-04-30)
      Other
      Open Access
      Consider the celebrated Lyness recurrence $x_{n+2}=(a+x_{n+1})/x_{n}$ with $a\in\Q$. First we prove that there exist initial conditions and values of $a$ for which it generates periodic sequences of rational numbers with ...
    • Rational periodic sequences for the Lyness recurrence 

      Gasull, Armengol; Mañosa Fernández, Víctor; Xarles Ribas, Xavier (2012-02-01)
      Article
      Restricted access - publisher's policy