v2: Added β (minimum area unit of spacetime) to Group II table with full derivation. Changed P2 from ℏ to h. Removed speculative Appendix A (A.1–A.11). / v2: グループIIにβ(時空の最小面積単位)を追加し導出を記載。P2をℏからhに変更。付録A(A.1〜A.11)を削除。
Noriaki Kihara (Thu,) studied this question.