A.    Because existence and non-existence may be equated as being one-in-the-same; each having identical characteristics and both mutually exclusive because (1) both are perceived as universally permeable throughout Reality and (2) because categorically each is conceived as being diametrically opposed, neither empty space nor non-existence can exist.  Accordingly, it can be directly surmised that only existence exists throughout the unbounded Cosmos as homogeneous substance.  In both Dynamic Geometry and Surface Mechanics, such substance is referred to as the Infinite Volume.  Though the Infinite Volume was initially discovered as substance, it serves in a dual role as form, being represented as (a, a, a) along any three orthogonal axes within it.
    As form, the Infinite Volume belongs to a class of four forms, uniquely common in the measure of their simplicity, and hence probability of occurrence (P), where the probability of existence is inversely proportional to their complexity (C) as depicted in the following table: