広島大学

Basic Information

Educational Backgrounds

• The University of Tokyo, Graduate School, Division of Mathematical Sciences, Dept. of Mathematical Science, Japan, 1991/04, 1994/03
• University of Tokyo, Graduate School of Science, Dept. of Math.,, Japan, 1989/04, 1991/03
• Waseda university, faculty of science, Dept. of Math.,, JAPAN, 1985/04/01, 1989/03/15

Academic Degrees

• Ph.D. (Mathematical Science), The University of Tokyo
• Master of Science, The University of Tokyo

Educational Activity

• [Bachelor Degree Program] School of Science : Mathematics : Mathematics
• [Master's Program] Graduate School of Integrated Sciences for Life : Division of Integrated Sciences for Life : Program of Mathematical and Life Sciences
• [Doctoral Program] Graduate School of Integrated Sciences for Life : Division of Integrated Sciences for Life : Program of Mathematical and Life Sciences

In Charge of Primary Major Programs

• Mathematics

Research Fields

• Mathematical and physical sciences;Physics;Mathematical physics / Fundamental condensed matter physics
• Mathematical and physical sciences;Mathematics;Mathematical analysis

Research Keywords

• Mathematical physics
• Variational Principle
• Applied Dynamical system, especially Renormalization group theory

Affiliated Academic Societies

• Society for Industrial and applied Mathematics, 1993
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• Japan Society for Industrial and Applied Mathematics (JSIAM)
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• The Mathematical Society of Japan, 1991/10
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Educational Activity

Course in Charge

1. 2026, Liberal Arts Education Program1, 1Term, Introductory Seminar for First-Year Students
2. 2026, Undergraduate Education, 3Term, Mathematics for Computation B
3. 2026, Undergraduate Education, First Semester, Special Study of Mathematics and Informatics for Graduation
4. 2026, Undergraduate Education, Second Semester, Special Study of Mathematics and Informatics for Graduation
5. 2026, Graduate Education (Master's Program) , Year, Research for Academic Degree Dissertation in Mathematical and Life Sciences
6. 2026, Graduate Education (Master's Program) , 2Term, Mathematical Analysis A
7. 2026, Graduate Education (Master's Program) , 2Term, Topical Seminar in Mathematical Science C
8. 2026, Graduate Education (Master's Program) , 4Term, Topical Seminar in Mathematical Science D
9. 2026, Graduate Education (Master's Program) , First Semester, Exercises in Applied Mathematics and Computational Science A
10. 2026, Graduate Education (Master's Program) , Second Semester, Exercises in Applied Mathematics and Computational Science B

Research Activities

Academic Papers

1. ★, TEMPORAL SUSCEPTIBILITY AND THE KYIV–OHNISHI FLOW: A LIE-ALGEBRAIC FRAMEWORK FOR DISSIPATIVE QUANTUM DYNAMICS, Ukrainian Infomation Security, 27(1), https://jrnl.kai.edu.ua/index.php/ZI/article/view/21171-https://jrnl.kai.edu.ua/index.php/ZI/article/view/21171, 20260505
   Link to Paper Search Results by DOI
2. ★, Lie-Algebraic Observable-Dependent Renormalization: A Unified Framework for Driven Open Quantum Systems and Stochastic Navier–Stokes Equations, Preprint, 20260429
3. ★, Global Gevrey-Class Solutions to Navier–Stokes Equations with or without Stochastic Advection Lie Transport Noise in Arbitrary N Dimensions, Preprint, 20260409
4. ★, Exact Non-Perturbative Description of Quantum Proton Transfer in Open Biomolecular Systems via Lie-Algebraic Observable-Dependent Renormalization, Preprint, 20260408
5. ★, Quantum Simulation of Riemann Zeros as Missing States in the Primon Gas via Lie-Algebra Decoupled VQE and Cyclic RG Flows, Preprint, 20260407
6. ★, Nonlinear Phase Stabilization in Quantum Information Systems: An LA-ODR Framework with Temporal Susceptibility Feedback, 20260403
   Link to Paper Search Results by DOI
7. ★, Lie-Observable-Dependent Renormalization of Temporal Phase Synchronization: Exact Fixed-Point Lindbladians in the Thermodynamic Limit, Preprint, 20260401
8. ★, Topological Dissipative Quantum Spin Glass: Protected Majorana Zero Modes and Filling-Driven Entanglement Transitions in Disordered Non-Hermitian Kitaev Chains, Preprint, 20260320
9. ★, LA-EWOG Cosmology: Lie-Observable-Dependent Renormalization of the Unitary Bounce and Topological Mass in SL(3,R) Non-Compact Gauge Theories, Preprint, 20260321
10. ★, Continuous-Variable Quantum Computing for Non-Compact Gauge Theories: Generalizing to Sp(2n;R) Lattices and Multi-Radial Holographic RG Flow, Preprint, 20260317
11. ★, A universal bound on relaxation rates for infinite-dimensional Gaussian quantum Markov semigroups, Preprint, 20260322
    Repository URL
12. ★, Lie-Cartan Enhanced Truncated Variational Hamiltonian Ansatz with Renormalization Group Flow: Towards Chemical Accuracy on NISQ Devices, Preprint, 20260314
13. ★, Entanglement Spectrum and Topological Entanglement Entropy in Non-Compact SL(n,R) Gauge Theories: Exact vs Emergent Higher-Rank Symmetries from Iwasawa Decomposition, Preprint, 20260308
14. ★, Lie-Algebraic Observable-Dependent Renormalization of Dissipative Quantum Cat Phases in the Quantized Lugiato-Lefever Equation: Preservation of Wigner Negativity and Non-Equilibrium Phase Invariants in the Thermodynamic Limit, Preprint, 20260307
15. ★, Lie-Algebraic Observable-Dependent Renormalization of the Quantum Lugiato-Lefever Equation: Exact Effective Models for Quantum Frequency Combs and Exciton-Polariton Condensation in the Thermodynamic Limit, Preprint, 20260305
16. ★, Lie-Decoupled Observable-Dependent Holographic RG Flows in Topological Open Quantum Systems: Exact Krylov Reduction, VQE Simulation, and Universal TEE Probes via Cyclic Multi-Informationy, Preprint, 20260303
17. ★, Dynamical Quantum Phase Transitions in Non-Compact Gauge Theories: Banach-Lie Decoupling and Emergent Compactification from Confinement to Topology, Preprint, 20260303
18. ★, Lie-Algebraic Entanglement-Weighted Operator Geometry (LA-EWOG): Observable-Dependent Renormalization and Holographic RG Flows in SL(3,R) Non-Compact Gauge Theories for Dark Galaxies and Emergent Gravity, Preprint, 20260227
19. ★, Unified Wigner Phase-Space Theory of Driven-Dissipative Quantum Cat States: Generalized Hudson Theorems and Engineered Control of Z2 Symmetry Breaking and Limit Cycles, 20260220
20. ★, Lie-Algebraic Observable-Dependent Renormalization for Model Reduction in Open Quantum Dynamics, Preprint, 20260218
21. ★, Variational Analysis of Emergent Temporal Arrow in Non-Compact Toy Models: Precision Benchmarks and NISQ Feasibility, Preprint, 20260215
22. ★, Transcendental Topological Order in Non-Compact SL(n,R) Gauge Theories: Scale Resonance in Holographic Radial Directions and Emergent Discrete Time Crystals, Preprint, 20260212
23. ★, Stochastic Quantum Foundations of Pulled Front Propagation: Non-Hermitian Topology, Fluctuations, and Entanglement Scaling in the Quantized Fisher-KPP Equation, Preprint, 20260208
24. ★, Non-Hermitian Kitaev Chains and Higher Dimensions for Entanglement Transitions: Renormalization Group Approaches via VQE and Lie algebra decoupling, Preprint, 20260207
25. ★, Quantum Foundations of Pulled Front Propagation: Non-Hermitian Topology and Entanglement Scaling in the Fisher-KPP Equation, Preprint, 20260207
26. ★, Emergent Arrow of Time in Non-Compact Lattice Gauge Theories: Variational Simulation of Holographic Temporal Structure via Non-Compact Group Radial Freezing, Preprint, 20260203
27. ★, Provably Efficient Truncation Bounds for Non-Compact SL(2, R) Lattice Gauge Theories via Iwasawa Mode Separation, Preprint, 20260131
28. ★, Higher-Rank Symmetries and Emergent Geometry in Non-Compact $SL(3,\mathbb{R})$ Lattice Gauge Theories: Toward Holographic (3+1)D Gravity via Quantum Simulatio, Preprint, 20260130
29. ★, Emergent Compactification and Higher-Form Symmetries in Non-Compact Gauge Theories: Entanglement Spectra in SL(2, R) Continuous-Variable Quantum Circuits, Preprint, 20260129
30. ★, Continuous-Variable Quantum Computing for Non-Compact Gauge Theories: Approaching (2+1)D Gravity via SL(2;R) Lattices, Preprint, 20260126
    Link to Paper Search Results by DOIRepository URL
31. ★, Lie Algebra Decoupling and Holographic RG in Non-Compact Lattice Gauge Theory, Preprint, 20260122
32. ★, Dynamics in Hamiltonian Lattice Gauge Theory: Approaching the Continuum Limit with Hyperbolic Partitioning of SL(2;R), Preprint, 20260122
33. ★, Renormalization Group Analysis of Photonic Variational Quantum Clustering: Rigorous Scaling and Error Bounds, Preprint, 20260122
34. ★, Quantum Fluctuation-Induced Self-Replicating Patterns and Limit-Cycle Phases in the Quantized Gray-Scott Framework, Preprint, 20260121
35. ★, Dissipative Quantum Cat Phases in Driven-Dissipative Kerr Cavities: Classification via Locally Reversible Channels, Preprint, 20260121
36. ★, Quantum Foundations of Liesegang Pattern Formation: Second Quantization, Decoupling, and Scaling Laws in Colloidal Quantum Systems, Preprint, 20260101
37. ★, Topological Measurement-Induced Phase Transition in the Kitaev Chain, Preprint, 20260111
38. ★, Scalable Topological Quantum Dynamics via Renormalized Local-Information Time Evolution, Preprint, 20260111
39. ★, Circuit Quantum Acoustodynamics for Bosonic Kitaev Honeycomb Lattices: Non-Abelian Anyons and Topological Braiding via Lie Algebraic and RG Analysis on 2D Floquet Extension, Preprint, 20251229
40. ★, Excited Topological Edge States and Gain-Induced Lasing via SSVQE in Bosonic Su-Schrieffer-Heeger Chains, Preprint, 20251225
41. ★, Hybrid Circuit Quantum Acoustodynamics for Bosonic Kitaev Chains: Variational Mapping and Lie Algebraic Decoupling of Topological Phases, Preprint, 20251221
42. ★, Matrix-Element Engineering of Bosonic Modes: Lie-Algebraic Decoupling and Synthetic High-Angular-Momentum Spins, Preprint, 20251207
43. ★, Dissipative Topological Protection of Majorana Modes in Yukawa-Mediated Kitaev Chains Using Synthetic High Angular Momentum Spin Dynamics, Preprint, 20251204
44. ★, Multiple Timescales in Open Kitaev Chains: Renormalization Group Analysis and Insights from Non-Integrability, Preprint, 20251204
45. ★, Quantum Fluctuation-Induced Exciton-Polariton Condensation and Limit-Cycle Phases in the Quantized Lugiato-Lefever Framework, Preprint, 20251126
46. ★, A Note on Generalized Hudson Theorems for Wigner Negativity in the Quantized Lugiato-Lefever Equation, Preprint, 20251125
47. ★, Exceptional Points in Dephased Topological Quantum Walks as Lyapunov Stable Non-Equilibrium Attractors, Preprint, 20251120
48. ★, Mathematically Physical Remarks on Exact Dissipative Z2 Symmetry Breaking in a Dephasing Many-Body Open Quantum System, Preprint, 20251118
49. ★, On Stochastic N-S equations via Gevrey Class Normal Form of Lie Algebra Frameworks in Reflexive Banach Spaces in Infinite Dimensions, International Journal of Advanced Mathematical Sciences, 12(1), 9-15, 20251117
    Link to Paper Search Results by DOIRepository URL
50. ★, Precise Control of Quantum Cat and Fock States in Driven-Dissipative Multi-Mode Kerr Cavities via Engineered Nonlinearity Ratios, International Journal of Advanced Mathematical Sciences, 12(1), 9-15, 20251117
    Link to Paper Search Results by DOIRepository URL
51. ★, Extending Lie Algebra Frameworks to Reflexive Banach Spaces: Decoupling and Normal Forms for Quadratic Nonlinear Systems in Infinite Dimensions, Preprint, 20251117
52. ★, 60 Measurement Groups for 116-Qubit CYP3A4: A 134-Fold Improvement via Locality-Aware Tabu-Colony Coloring, International Journal of Advanced Mathematical Sciences, 20251120
    Link to Paper Search Results by DOIRepository URL
53. ★, Lie Algebra Decoupling and Normal Forms for Differential Equations defined in Infinite Dimensional Hilbert Space with Quadratic Nonlinearities, Preprint, 20251108
54. ★, Resonant Chaos and Schwinger-Like Excitations in Driven 1D Quantum Billiards: A Lindblad Approach to Self-Propelled Reflections and Vacuum Instabilities, Preprint, 20251107
55. ★, Quantum Boundary Equilibrium Bifurcation: Schwinger-like Pair Production in Impacting QFT Hybrids, Preprint, 20251107
56. ★, Topological Microphase Separation in 1D Diblock Copolymers via Jordan-Wigner Mapping: Quantum Field Simulation with Lindblad Dynamics and Lie-Trotter Time Evolution, Preprint, 20251105
57. ★, Entanglement Transitions in Open KG-Dirac Systems: Quantum Hysteresis for Enhanced CO2 Reduction in Dissipative TI Hybrids, Preprint, 20251025
58. ★, Magnetic Fractional Schrödinger Eigenvalue Optimization: A Quantum Field Theory Extension with Spontaneous Symmetry Breaking and Nambu-Goldstone Analogies, Preprint, 20251025
59. ★, Spin-Polarized Quantum Many-Body Hysteresis in MOF/TI Hybrids: Rigorous RG Analysis with KG-Dirac Coupling for CO2 Reduction, Hydrogen Storage, and Relativistic Quantum Information, Preprint, 20251018
60. ★, Spontaneous Symmetry Breaking in Fractional Eigenvalue Optimization for Composite Membranes: A Quantum Field Theory Extension via Renormalization Group Methods and Nambu-Goldstone Analogies, Preprint, 20251022
61. ★, Quantum Klein-Gordon model of Quantum Many-Body Hysteresis in Topological Insulators for Hydrogen Switching in Mg-Ni Alloys and CO2 Reduction Catalysis, International Journal of Advanced Mathematical Sciences, 12(1), 39-47, 20250928
    Link to Paper Search Results by DOIRepository URL
62. ★, Site Number Dependence of Hysteresis in Binary Memory Models via Renormalization Group Approach Application to CO2 Reduction Reaction, IJAMS, 20250903
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63. ★, Renormalization Group Reduction of Nonlinear Klein-Gordon Equation to Complex Ginzburg-Landau for Hydrogen Storage Dynamics in Mg-Ni Alloys, Preprint (http://dx.doi.org/10.2139/ssrn.5490827, 20250901
64. ★, Rigorous Renormalization Group Analysis of Quantum Many-Body Hysteresis in Topological Insulators: Applications to Hydrogen Switching and CO_2 Reduction Catalysis, Preprint, https://ssrn.com/abstract=5490827 or http://dx.doi.org/10.2139/ssrn.5490827(https://ssrn.com/abstract=5490827 or http://dx.doi.org/10.2139/ssrn.5490827), 20250910
    Link to Paper Search Results by DOI
65. ★, DYNAMICAL APPROACH TO THE ISHITANI-ABE MODEL: S-MPC FOR IMPROVED CO2 PHOTOSYNTHESIS, international Journal of Advanced Mathematical Sciences, 20250905
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66. ★, Topological Insulator Dynamics with Hydrogen On-Off Switching: Capacity Improvement by MPC method via Chiba Rigorous Renormalization Group in view of Control theory, American J. Engineering Research, 20250926
67. ★, Rigorous Analysis of Langevin Noise Effects on Hysteresis in Simplified Binary Memory Models: Classical and Quantum Dynamics for CO2 Reduction Catalysis, Preprint (arXiv submission /6829258, 20250925
    Link to Paper Search Results by DOI
68. ★, Topological Hysteresis in Quantum Many-Body Systems: Applications of the SBM Model and MoS2, Preprint, 20250802
69. ★, Symmetry Breaking and Universality in Quantum Many-Body Hysterisis for CO2 Reduction, Preprint, 20250801
70. ★, Feedback Control and Stabilization in Nonlocal Cahn-Hilliard-Brinkman Systems, IJAMS, 20250730
71. ★, Master Sound Control and Chaotic Synchronization in Ring-Coupled Duffing Oscillators for Multi-Speaker Acoustic Control: From Finite Chains to Continuum Limits, IJAMS, 20250712
72. ★, Site Number Dependence of Hysteresis in Binary Memory Models via Renormalization Group Approach Application to CO2 Reduction Reaction, Preprint, 20250630
73. ★, Competing Dynamics and Control Systems: Theoretical Analysis and Simulation Results, international Journal of Advanced Mathematical Sciences, 20250907
74. ★, Stochastic Model Predictive Control of Cheer Spikes and Low-Frequency Noise in Outdoor Festivals, international Journal of Advanced Mathematical Sciences, 20250905
75. A Simple Stability Conjecture and Proofs to Lower Dimensional Phase Spaces Examples for Discrete Time Systems Applications to PID control Theory, Journal of Comprehensive Pure and Applied Mathematics, Vol.3 issue.1, 20250518
76. ★, Comparative Analysis of Control Strategies for a Linear System with Noise: LQR, Kalman+LQR, SMC, and MPC, international Journal of Advanced Mathematical Sciences, 20250905
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77. ★, Stochastic Model Predictive Control of Cheer Spikes and Low-Frequency Noise in Outdoor Festivals, https://doi.org/10.14419/c1y1ch19, 20250525
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78. A mathematically scientific study of cyanobacterias circadian rhythm based on induced memory by hysteresis structure of covalent modification as self-feedforward auto-control system, American Journal of Engineering Research, Volume-13(Issue-6), 38-42, 20240611
79. Memory, hysteresis and oscillation induced by multiple covalent modifications and its application to circadian rhythm of Cyanobacteria, Research Report in RIMS of Kyoto University, 1616, 144-156, 2008
80. Memory reinforcement with scale effect and its application to mutual symbioses among terrestrial cyanobacteria of Nostochineae, feather mosses and old trees in boreal biome in boreal forests, Global Science Chronicle, 1(1), 1-7, 20170815
81. A binary digit of memory induced by multiple covalent modifications and its application to molecular rhythm (Mathematical Aspects for nonlinear problems related to Life-phenomena), RIMS Kokyuroku, 1616, 145-154, 200810
82. ★, Standard model of a binary digit of memory with multiple covalent modifications in a cell, J. of pure and applied math.,, 2(1), 2018
83. ★, Characterization to behavior of time global solutions of a nonlinear parabolic equation with a certain jump term, Preprint
84. Stability of a stationary solution for the Lugiato-Lefever equation, Tohoku Math. J., Vol. 63(No. 4), 651-663, 20111225
85. Erratum: Stability of Stationary Solution for the Lugiato-Lefever Equation, Tohoku Math. J. (Accepted), 2020
86. ★, A mathematical study of the one dimensional Keller and Rubinow model for Liesegang bands, J. Stat Phys, Vol.135, 107-132, 20090924
87. Bifurcation analysis to Lugiato-Lefever equation in one space dimension, Physica D, Vol.239, 2066-2083, 20101115
88. ★, Spectral comparison between the second and the fourth order equations of conservative type with non-local terms, JJIAM, 253-262, 19980430
89. Symmetry other phenomena in the optimization of eigenvalues for composite membranes, CMP, 214, 315-337, 20000729
90. ★, Analytical solutions describing the phase separation driven by a free energy functional containing a long-range interaction term, Chaos, 9(No. 2), 329-341, 19990521
91. ★, Modified Hele-Shaw moving boundary problem related to some phase transition phenomena, Bull. Univ. Electro-Comm, 11(No. 1), 17-28, 19980930
92. Spectral comparison between the second and the fourth order equations of conservative type with non-local terms, JJIAM, 15(No. 2), 253-262, 19980331
93. ★, Some mathematical aspects of the micro-phase separation in diblock copolymers, Phys. D, 84(No. 1-2), 31-39, 19950505
94. ★, Inertial manifolds for Burgers' original model system of turbulenc, Appl. Math. Lett, 7(No. 3), 33-37, 19940625
95. A note of the existence of nonconstant critical points of free energy functionals in the gradient theory of phase transitions, Adv. Math. Sci. Appl., 4(No. 2)
96. Dimension estimate of the global attractor for forced oscillation systems, JJIAM, 10(No. 3), 351-366, 19930530
97. Dimension estimate of the global attractor for resonant motion of a spherical pendulum, Proc. Japan Acad. Ser. A Math. Sci., 68(No. 9), 302-306, 19921215
98. A billiard problem in nonlinear and nonequilibrium systems, Hiroshima Math. J, 37(No. 3), 343-384, 20070512
99. Physarum can solve the shortest path problem on Riemannian surface mathematically rigorously, Int. J. P. Appl. Math, 47(No. 3), 353-369
100. Failure to the shortest path decision of an adaptive transport network with double edges in Plasmodium system, International J. Dyn. Sys. Diff. Eqn., Vol. 1(No. 3), 210-219, 20080922
101. Standing pulse solutions for the FitzHugh-Nagumo equations, Japan J. Indust. Appl. Math., 20(No. 1), 315-337, 20000531
102. Spectral comparison result and morphology for diblock copolymer problems, roceedings of the Second Japan-China Seminar, 14, 253-256, 19950615
103. On global minimizes for a variational problem with non-local effect related to micro-phase separation, RIMS Report, 973, 171-176, 19960921
104. ★, Characterization of the most stable stationary solution with fine structure in a certain nonlinear parabolic PDE, Preprint, 2020
105. ★, On the multiple existence of steady states in the gradient theory of phase transitions, Bull. Univ. Electro-Comm., 7(No. 3), 157-166, 19940731
106. Existence and instability of steady states in phase transition in a thin plate with non-local self-stress effects, Bull. Univ. Electro-Comm., 8(No. 1), 53-58, 19950430
107. Mathematical analysis to an adaptive network of the Plasmodium system, Hokkaido Math. J., Vol. 36(No. 2), 445-465, 20070523
108. Computational ability of cells based on cell dynamics and adaptability, New Generation Computing, 27, 57-81, 20090531
109. Numerical computations of free boundary problems in quadruple precision arithmetic using an explicit metho, GAKUTO Internat. Ser. Math. Sci. Appl., 11, 193-207, 19980531
110. Mathematical analysis to coupled oscillators system with a conservation law, RIMS kokyuroku BESSATSU, B21, 129-147, 2010
111. A Mathematical analysis to Liesegang ring as a radially symmetric solution in n-space dimensions, Proceeding of the 6th EASIAM and AMIC 2010, 6

Publications such as books

1. 2005, The Algorithmic Beauty of Sea Shell (H. Meinhardt), Book Review, Book Review, Nonlinear PDE, Nihon Hyouron Sha, 2005, Scholarly Book, Single work, 日本語, Isamu Ohnishi
2. 2003, Nonlinear Analysis to Pattern formation –Liesegang phenomena, in Japanese, nonlinear PDE, Nihon Hyouron Sha, 2003, Scholarly Book, Single work, 日本語, Isamu Ohnishi
3. 2008, mathematical seminar, modeling, Evolution equation theory, Scholarly Book, Single work, Isamu Ohnishi

Invited Lecture, Oral Presentation, Poster Presentation

1. Spin-Polarized Quantum Many-Body Hysteresis in MOF/TI Hybrids (closed and/or open system ), Isamu Ohnishi, Forum for Mathematics as an Infrastructure (MaaI), 2025/12/15, Without Invitation, Japanese, Forum for Mathematics as an Infrastructure (MaaI), published
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2. Spin-Polarized Quantum Many-Body Hysteresis in MOF/TI Hybrids: Rigorous RG Analysis with KG-Dirac Coupling for CO2 Reduction, Hydrogen Storage, and Relativistic Quantum Information, Isamu Ohnishi, 2025/11/19, Without Invitation, Japanese
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3. Stochastic Model Predictive Control of Cheer Spikes and Low-Frequency Noise in Outdoor Festivals, Isamu Ohnishi, Anuual meeting of JSM (Annual meeting of JSIAM), 2025/09/19, Without Invitation, Japanese, Japan Mathematical sciety (JSIAM), Nagoya University (Tokyo University of Science)
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4. Comparative Analysis of Control Strategies for Noisy Linear Systems: Optimal Horizon Selection for MPC, Isamu Ohnishi, Mathematical society of Japan (2025, autumn annual meeting) JSIAM (2025, Autumn annual meeting), 2025/09/19, Without Invitation, Japanese, Japan Mathematical Society (JSIAM), Nagoya University (Tokyo University of Science)
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5. Structure of steady state solutions of a type of nonlinear parabolic PDE system and evolution equations, Isamu Ohnishi, Hatten Houteisiki Kenkyuukai, 2019/12/24, Without Invitation, Japanese, Japan Wemens university
6. Existence theorem and some properties of modified Keller-Rubinow system, Isamu Ohnishi, Annual meeting of Math. Soc. JAPAN (2019), 2019/03, Without Invitation, Japanese
7. Existence theorem and some properties of modified Keller-Rubinow system by use of subdifferential, Isamu Ohnishi, 2018/12, Without Invitation, Japanese
8. Standard model of a binary digit of memory with multiple covalent modifications in a cell, Isamu Ohnishi, 2018/09, Without Invitation, Japanese
9. micro-structure of the most stable steady state of Turing Pattern, Isamu Ohnishi, Kansuu-Houteisiki-Bunkakai, Shuuki-Sougou-Bunkakai, Mathmatical Society of Japan, 2019/09/17, Without Invitation, Japanese, Mathematical society of Japan, Kanazawa University
10. mathematical analysis for one-dimensional Keller-Rubinow model in Liesegang phenomena, Isamu Ohnishi, R. v.d. Hout, D. Hilhorst, M. Mimura, soukai Math Soc. JAPAN 2018 Sep., Without Invitation, Japanese
11. Memory reinforcement with scale effect and its application to mutual symbioses among terrestrial cyanobacteria of Nostochineae, feather moss and old trees in boreal forests, Isamu Ohnishi, nothing, The 7th EAFES, 2016/04/20, Without Invitation, English, EAFES, Daegu, Korea
12. A binary digit of memory induced by multiple covalent modifications and its application to molecular rhythm, Isamu Ohnishi, Special lecture in Sep. Math. Soc. JAPAN, 2008/09, With Invitation, Japanese

Works, etc.

1. 新しい教科書「Dirac記号による線形作用素」の執筆, Isamu Ohnishi, The goal of this education is not to introduce a vast array of new topics. Rather, it is to take the linear algebra covered in the second year, rewrite it in Dirac notation, and then carry the same sentences into Hilbert spaces, semigroups, and open quantum dynamics. The five-volume series now being reconstructed from lecture notes is the mechanism for that process. Read vertically, the series is a progression through the academic years. Read horizontally, it is the repeated use of a few computational techniques. Vertical use. In Volume 1 (third year, Applied Mathematics A), students separate a vector from its component representation. They sandwich completeness relations by hand in order to change displays, they see that the product of non-commuting projections need not vanish, and they see that entanglement means a global projection that cannot be written as a product of local projections. The targets are the density operator $\rho$ and the expectation $\mathrm{Tr}(\rho A)$. In Volume 2 (fourth year), the same sandwich is raised to strong convergence, and the matrix $C$ becomes an operator $Q$. White noise fails to live in $L^2$ for one reason only: $\mathrm{Tr}\,Q=\infty$. In Volume 3 (introductory graduate level), time is added and only the weight of the arrival space is changed. In Volume 4, observables are projected, while remaining CPTP, onto the block where they stabilize. Volume 5 is a translation guide: a sentence in a research paper is to be pointed at a numbered assumption in Volume 4, Chapter 10. The opening of a master's thesis is fixed at four lines: the observable to be kept, its Krylov tower, the consistent projection, and the name of the expectation that remains. Horizontal use. Three hands appear in every volume: sandwich, change of display, and composition of projections. The resolution of the identity $I=\sum|j\rangle\langle j|$ in Volume 1 becomes strong convergence in Volume 2. The algebraic projection $\Pi$ in Volume 4 is not the measurement channel $\mathcal{E}$. For spontaneous emission, $\sigma_z$ is area-type and $\sigma_x$ is volume-type. That one line is slid across to Kuramoto's moment tower and to the centre projection of Stokes. In the exercises, QuTiP overlays $\langle\sigma_z\rangle$ before and after compression, so the stage at which an assumption fails is visible as a number. Brief solutions stay as excerpts. Students first write the four-line proofs in the main text (spectrum, trace, outer product). Rules for the classroom. Do not begin from the differential equation of a wave function. Fix the type in finite dimension, then complete. Do not mix homework with theorems, whether the topic is a normal form, an interface, or the full text of Lions. Neither EWOG nor 4 MHz is a main theorem. The main theorem is compression. Variables that a sensor does not read may be removed from the dynamics by a completely positive projection. That sentence is placed first, because it is also a foundation for engineering. Compression and reduction are not topics for the quantum classroom alone. In control, if unread modes are dropped through a channel, feedback closes in a lower dimension. In learning, only the tower of scores that affect the loss is kept, so the Fisher matrix stays at a computable size. In signal processing, directions on which the colour $Q^{1/2}$ does not land are left out of the sum from the start. In sensor design, the algebra of the axes to be read is declared first, and incompatible measurements are removed from the hierarchy. In every field the three assumptions are the same: the map is a projection, it is completely positive, and it commutes with the generator. Expectation values after the drop remain valid. If they do not, either the retained algebra was wrong or the projection was not a channel. I welcome corrections of misprints and share drafts with students. A coauthor line is written only after I have asked about the other party's plans. The closing goal is not to read a paper. It is to describe the mechanism under discussion in one's own words, with the manuscript closed. Do not enlarge the scope. Have them write the same sentence again, adding only the type of convergence., 2026/09, 2026/09, WEB, Educational Materials
2. ペンネームでの雑感想文, Isamu Ohnishi, I keep a record of my daily thoughts and impressions in the form of impressions and miscellaneous notes., 2023/04, 2024/03, note.com, The Others
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3. 講義の記録, Isamu Ohnishi, Formal lectures: Lectures on Applied Mathematics A and Computational Mathematics B (30 lectures in total), a brief introduction to the specialty for third-year students (45 minutes), and an explanatory lecture for the graduation research assignment (just under 20 minutes) are available on YouTube., 2023/04, 2024/02, Hiroshima University, Educational Materials
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4. 講義資料, Isamu Ohnishi, Draft of lecture contents for "High school university mock lecture" related to high school-university collaboration, 2023/06, 2023/10, Kure-Mitsuta High-School Mihara High School, Educational Materials
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5. 講義録（note.com）, Isamu Ohnishi, https://note.com/isamu_o0812/n/nf8d14e17ff38 The notes summarizing the main points of the lectures have been compiled in a book format and published for 30 weeks., Lecture Hall in Hiroshima Univ. https://note.com/isamu_o0812/n/nf8d14e17ff38, Educational Materials
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6. 講義録（3、４年生、修士学生用）, Isamu Ohnishi, Lecture hall in Hiroshima Univ. youtube: https://www.youtube.com/channel/UCjSunsEjBrfkZP0IdXW62EA/videos, Educational Materials
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7. 研究の軌跡とこれからへ向けての布石, 2021/07, Educational Materials
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History as Peer Reviews of Academic Papers

1. 2025, American Journal of Applied Mathematics, Others, Reviewer, 1
2. 2025, Journal of Comprehensive Pure and Applied Mathematics, Editor, Editor
3. 2024, American Journal applied Mathematics, Editor, Editor, 1
4. 2024, Communication Mathematical Physics, Others, Reviewer, 1