Browsing by Author "d945091a-e8d1-4d16-ae62-0f0a3e6373d8"

Now showing items 1-3 of 3

    • A Galois-theoretic approach to Kanev's correspondence 
      Lange, Herbert; Rojas, Anita M. (2008)
      Let G be a finite group, Λ an absolutely irreducible ℤ[G]-module and w a weight of Λ. To any Galois covering with group G we associate two correspondences, the Schur and the Kanev correspondence. We work out their relation ...
    • Group actions on Jacobian varieties 
      Rojas, Anita M. (Universidad Autonoma de Madrid, 2007)
      Consider a finite group G acting on a Riemann surface S, and the associated branched Galois cover πG : S → Y = S/G. We introduce the concept of geometric signature for the action of G, and we show that it captures much ...
    • Polarizations of isotypical components of Jacobians with group action 
      Lange, Herbert; Rojas, Anita M. (2012)
      We outline a method to compute the type of the induced polarization of an abelian subvariety of a canonically polarized Jacobian of a smooth projective curve. The method works for curves of not too big genus admitting a ...