2 citations
3 papers
physics.ed-ph2005★ 2 cited
Images in Christmas Balls
Eef van Beveren, Frieder Kleefeld, George Rupp
We describe light-reflection properties of spherically curved mirrors, like balls in the Christmas tree. In particular, we study the position of the image which is formed somewhere…
math.DG2004
Transgression forms in dimension 4
Isabel M. C. Salavessa, Ana Pereira do Vale
We compute explicit transgression forms for the Euler and Pontrjagin classes of a Riemannian manifold of dimension 4 under a conformal change of the metric, or a change to a Ri…
nlin.AO2004
Deterministic Bak-Sneppen model. Lyapunov spectrum and avalanches as return times
R. Vilela Mendes
A deterministic version of the Bak-Sneppen model is studied. The role of the Lyapunov spectrum in the onset of scale-free behavior is established and avalanches are interpreted as…