Pedro de M. Rios

Singularities of equidistants and global centre symmetry sets of Lagrangian submanifolds

We study the global centre symmetry set (GCS) of a smooth closed submanifold

THE WIGNER CAUSTIC ON SHELL AND SINGULARITIES OF ODD FUNCTIONS

M^m\subset \mathbb{R }^n, n \le 2m

Even Dimensional Improper Affine Spheres

. The GCS includes both the centre symmetry set defined by Janeczko (Geometria Dedicata 60:9–16, 1996) and the Wigner caustic defined by Berry (Philos Trans R Soc Lond A 287:237–271, 1977). The definition of GCS

Quantum Spin Systems and Their Operator Algebras

(M)

Symbol Correspondences for a Spin-j System

uses the concept of an affine