Bernard Leclerc Université de Caen, France
Real or Imaginary?
These contrasting notions appear in several places in mathematics. Real or imaginary numbers, real or imaginary quadratic fields, real or imaginary roots in a root system ... In this talk I will consider new items in this list: real or imaginary…
Jian-Guo Liu, Duke University Motivated by a study of least-action incompressible flows, we study all of the ways that a given convex body in Euclidean space can break into countably many pieces that move away from each other rigidly at constant velocity. Assuming they satisfy a least-action principle from optimal…