Generalising classical concepts of probability theory, the investigation of operator (semi)-stable laws as possible limit distributions of operator-normalized s

The Heisenberg group comes from quantum mechanics and is the simplest non-commutative Lie group. While it belongs to the class of simply connected nilpotent Lie

It is well known that if two independent identically distributed random variables are Gaussian, then their sum and difference are also independent. It turns out

This collection of expository articles by a range of established experts and newer researchers provides an overview of the recent developments in the theory of