Duality of a socio-spatial system comprises a global order constructed from the domains controlled by individuals, called a local-to-global phenomenon, as well as a global-to-local system existing over and above the domains of individuals, and expressing itself in some systems of boundaries and spaces which have a more collective or public nature.
Duality of a socio-spatial system
Hillier, B. & Hanson, J. (1984), The Social Logic of Space, Cambridge University Press: Cambridge. pp. 259-160