Periodic structure of Western, Eastern and a primitive “Intelligence”.

Rhythmic structure of "song" in humpback whales having well-developed spinning cells in the brain, and comparison between Western and Eastern rhythmic structures. 2024

Rhythmic Structure of Humpback Whale Song

A computer language proving Bach is “Art” mathematically.

To compute the complexity of Bach’s line in the tonal system, a mathematical model of the computational language named β was created based on the theory of quantum logic by Garrett Birkhoff and John von Neumann. As the quantum physics show the elementary particle take non-binary state and it contradicts with our ordinary logic, this language exploits this special logic and computes enormous combinations to achieve the true deductive inference on quantum mechanics. K.Otsuka. (2022).

Kazuki Otsuka - A computer language proving Bach is 'Art' mathematically

Verification of The Law of non-contradiction

Verification of The law of non-contradiction ¬(p ∧ ¬p) in the computation of nature by light interference experiment with Associate Prof. Inada at the International Research Center for Particle Physics, The University of Tokyo, 2023

Experiment Images

On the Computational Evolutionary Interpretation of the Golden Ratio and the Class of Functions Created by the Almost Periodic Structure

Descartes, Newton, and da Vinci believed that "ratios" govern all things and tried to unravel the structure of ratios in astronomy, music, and light. In the theory of computational evolution, the Golden Ratio is considered to be built into nature in such a way that it is intuitively recognizable and proves that life is a more complex entity that evolved over time by generating an almost cyclic structure in the evolving = computation = transformation that transitions from one time to the next. K.Otsuka. (2022).

Computational Evolutionary Interpretation of the Golden Ratio

Gagaku Abstracted - Imaginary "Gagaku" Music Generated by Audio Synthesis

Theoretical Analysis on Asian Harmony "Aitake" in Gagaku music based on the Tetora Chord Theory and an Imaginary "Gagaku" Music Generated by Audio Synthesis, 2010 - 2016

Watch on YouTube
Max/MSP Audio Synthesis Interface
Aitake Method 1 Aitake Method 2

Speeches & Lectures

  • "Theoretical Analysis on Asian Harmony 'Aitake' in Gagaku music based on the Tetora Chord Theory", 2016 Proceedings of 92th Oriental Musicology Society

  • "Machine Learning Analysis of Body Movement", 2019 Pekin University, the University of Tokyo and the Institute of Oriental Qin Studies Joint Symposium.

  • "Dynamic Generation of 'Koto Sound' using Parametric Synthesis - Mathematical Harmonics of Musical Cosmology", 2023 Lecture in Kyoto University

Lecture at Kyoto University in 2023

Selected Publications

  • K.Otsuka. "Computational Language β based on Orthomodular Lattices with the Non-distributivity of Quantum Logic." arXiv preprint arXiv:2203.12385 (2022).