Publications (4)
On the geometry of positive cones in finitely generated groups
J. Alonso, Y. AntolÃn, J. Brum +1
We study the geometry of positive cones of left-invariant total orders (left-order, for short) in finitely generated groups. We introduce the \textit{Hucha property} and the \texit…
Theory of Magnetic Anisotropy in III_{1-x}Mn_{x}V Ferromagnets
M. Abolfath, T. Jungwirth, J. Brum +1
We present a theory of magnetic anisotropy in diluted magnetic semiconductors with carrier-induced ferromagnetism. The theory is based on four…
Drastic slowdown of shear waves in unjammed granular suspensions
J. Brum, J. -L. Gennisson, M. Fink +2
We present an experimental investigation of shear elastic wave propagation along the surface of a dense granular suspension. Using an ultrafast ultrasound scanner, we monitor the s…
Generic Rotation Sets in Hyperbolic Surfaces
J. Alonso, J. Brum, A. Passeggi
We show that for generic homeomorphisms homotopic to the identity in a closed and oriented surface of genus , the rotation set is given by a union of at most convex…