The Breathing Universe Model (BUM) has undergone a substantial conceptual evolution, progressing from a collection of exploratory organizational concepts toward a more coherent and systematically structured ontology of realization. As the framework expanded across multiple publications, concepts originating from different levels of abstraction were often interpreted as belonging to the same organizational layer, creating ambiguities concerning their roles, relationships, and explanatory scope. The purpose of the present paper is to clarify the internal architecture of the BUM and establish a canonical hierarchy that distinguishes ontological conditions, behavioral regimes, operational structures, organizational dynamics, emergent processes, and observable realization. The paper begins by revisiting the foundational concepts of admissibility, the Zero-Line, differentiation, and organizational possibility. It then reinterprets the four behavioral regimes and develops a formal coherence grammar based on the interaction between regimes and operators. Building upon this foundation, earlier physical meta-operators are generalized into three canonical meta-principles—Initiation, Ordering, and Coupling—which generate coherent evolution through the dynamic expressions Snapping, Diffusion, and Torsion. The framework subsequently introduces a layered realization hierarchy in which persistence gives rise to information, memory, identity, synchronization, transport, and projection, ultimately culminating in observable realization. A central result of the paper is the resolution of longstanding ambiguities surrounding the twenty-seven-fold architecture. The analysis demonstrates that the number twenty-seven appears in two distinct but complementary organizational contexts. The first is the Closure Architecture, represented by the relation (1+2+4)+(4×5)=27, which establishes the conditions required for coherent existence. The second is the Organizational Dynamics Cube, represented by the relation 3×3×3=27, which describes the landscape of coherent evolution once organizational completeness has been achieved. Together these structures provide a unified bridge between admissibility and realization. The resulting architecture presents the Breathing Universe Model as a layered ontology in which closure establishes the conditions for existence, organizational dynamics govern coherent evolution, emergent processes generate observability, and realized structures constitute the domain of empirical physics. By distinguishing organizational levels, clarifying conceptual dependencies, and resolving several historical ambiguities, the paper provides a stable foundation for future mathematical formalization, empirical development, and theoretical integration within the broader Breathing Universe research program.
Ivo Gerlach Angela Noel Cerfontaine (Tue,) studied this question.