Complete collection of five papers in the Koku Universe (刻宇宙) research series by Yoshimitsu Katayama / TheYKHC. Presented as a single document for convenience of review. Each paper carries an independent Zenodo DOI. Papers 2-5 are revised versions incorporating peer review responses (2026-06-04). Contents: (1) Koku Universe v3. 0 — Gravity as Temporal Gradient (DOI: 10. 5281/zenodo. 20534188) ; (2) Koku Universe v3. 1 Revised — Speed of Light as Empirically-Fixed Geometric Invariant (DOI: 10. 5281/zenodo. 20534734) ; (3) Numerical Verification v2 — GPS Full Derivation GR+SR and IceCube Market Correlation (DOI: 10. 5281/zenodo. 20534292) ; (4) Koku vs Penrose CCC Revised — Two Alternative Hypotheses from the Same Conformal Root (DOI: 10. 5281/zenodo. 20534738) ; (5) Koku Applied to Human Heart Design — KHDS v1. 0 Fabrication Parameters for 3D Bioprinting (DOI: 10. 5281/zenodo. 20534719). Key results: GPS derivation GR (+45. 72) +SR (-7. 21) =+38. 51 us/day (0. 28% error) ; KHDS v1. 0 parameters: 7um/1mm/Vₘin=0. 80/tau=0. 857s; Three empirical discriminators between Koku Universe and Penrose CCC.
Yoshimitsu Katayama (Thu,) studied this question.
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