Interdependence among material objects and voids

Material-spatial interdependence (mat-dep) is a type of dependence in which the physical extents of two entities are necessarily and mutually contingent, e.g. an object and its matter, or a hole and its host. Such dependence is commonly found amongst arrangements of physical entities, particularly in models of the natural environment. In this paper, we analyze and formally characterize mat-dep, and show how it augments the physical characterization of the containment, constitution, and hosting relations, primarily for development of a hydro ontology.