Notes: Version 7 (V7) – Extended Axiomatic Core with Deeper Ontological Anchoring This version supersedes Version 6 (DOI: 10.5281/zenodo.19848433). The five‑axiom ontological core of HNDT remains unchanged, but Axiom 4 is significantly extended. Major changes in V7: Expanded Axiom 4 (defining properties of the 3D universe):Added temperature–microscopic vibration as a fourth primary anchoring pair, grounded in the unattainability of absolute zero and the omnipresence of microscopic vibration in D3D3.Recognized time–light as a deep secondary anchoring relation, acknowledging the foundational role of light in defining temporal structure.Introduced a “Remark on the three levels of motion” in D3D3 (microscopic, macroscopic Newtonian, and astrophysical/gravitational), clarifying how the same D1D1 directional order manifests across different λλ regimes. New open research interface:Added Interface 6 (Temperature‑Microscopic Vibration Anchoring and the Quantum‑Classical Boundary), providing a structured research direction that links the new anchoring pair to decoherence, the Third Law of Thermodynamics, and low‑temperature quantum phenomena. Terminology mapping (Section 3):Replaced the tabular presentation with a description list to ensure consistent rendering and avoid PDF boundary issues.Added two new entries for temperature–microscopic vibration and time–light association. Refined empirical predictions (Section 5):Prediction 3 (decoherence timescale) now includes an explicit boundary statement clarifying that the theoretical lower bound τdec>ℏ/(md2)τdec>ℏ/(md2) applies specifically to λλ-driven inter‑dimensional decoherence, without excluding other mechanisms. Acknowledgments:Updated to thank the independent research community and the philosophers/physicists whose foundational work inspired the framework (removed self‑acknowledgment). Version‑tracking clean‑up:Removed all references to V4; Version 6 is the immediate predecessor.Updated the publication date to April 30, 2026 to reflect the actual release. Cross‑coupling articulation:Explicitly discussed cross‑couplings among the four anchoring pairs (e.g., mass affecting time via gravitational time dilation, light connecting time and space via cc, mass‑energy equivalence, temperature‑entropy link), presenting them as natural consequences of the shared D1D1 origin rather than additional axioms. The present V7 remains an internally self‑consistent axiomatic foundation, building directly upon Version 6 (DOI: 10.5281/zenodo.19848433).
Lu et al. (Thu,) studied this question.