What is a particle from the standpoint of systems theory?

Our theory of collective motions of open system [2,3] is generalized to the case of systems distributed inm-dimensional space. We propose a rigorous definition of a particle in terms of systems theory. A concrete image of a particle, conceived as a localized collective entity in Space, is obtained. It turns out that wave-corpuscle duality is nothing else but a simple consequence of general equations of collective motions: particles appear at the output as collective manifestations of inner states, and waves appear at the input as guiding waves of particles.The David and Helena Zlotowski chair in Operator Theory and Systems Theory.