T. Ohsawa

Most-cited papers

Nonholonomic Hamilton-Jacobi equation and integrability
T. Ohsawa, A. Bloch
200947 citations Open access
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Discrete Hamilton-Jacobi Theory
T. Ohsawa, A. Bloch, M. Leok
2009SIAM Journal of Control and Optimization45 citations Open access
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Variational and Geometric Structures of Discrete Dirac Mechanics
M. Leok, T. Ohsawa
2008Foundations of Computational Mathematics40 citations Open access
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Symplectic semiclassical wave packet dynamics
T. Ohsawa, M. Leok
201338 citations Open access
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Symmetry Reduction of Optimal Control Systems and Principal Connections
T. Ohsawa
2011SIAM Journal of Control and Optimization38 citations Open access
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Discrete Hamilton-Jacobi theory and discrete optimal control
T. Ohsawa, A. Bloch, M. Leok
2010IEEE Conference on Decision and Control38 citations
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A PSK Group Modem for Satellite Communications
Fumio Takahata, M. Yasunaga, Y. Hirata, T. Ohsawa +1 more
1987IEEE J. Sel. Areas Commun.34 citations
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Nonholonomic Hamilton-Jacobi theory via Chaplygin Hamiltonization
T. Ohsawa, O. Fernandez, A. Bloch, D. Zenkov
201130 citations Open access
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Hamilton-Jacobi Theory for Degenerate Lagrangian Systems with Holonomic and Nonholonomic Constraints
M. Leok, T. Ohsawa, D. Sosa
201129 citations Open access
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Variational Optimization on Lie Groups, with Examples of Leading (Generalized) Eigenvalue Problems
Molei Tao, T. Ohsawa
2020International Conference on Artificial Intelligence and Statistics21 citations
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The Siegel Upper Half Space is a Marsden–Weinstein Quotient: Symplectic Reduction and Gaussian Wave Packets
T. Ohsawa
201521 citations Open access
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Contact geometry of the Pontryagin maximum principle
T. Ohsawa
2015at - Automatisierungstechnik21 citations Open access
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Discrete Dirac Structures and Implicit Discrete Lagrangian and Hamiltonian Systems
M. Leok, T. Ohsawa
201017 citations Open access
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Symmetry and Conservation Laws in Semiclassical Wave Packet Dynamics
T. Ohsawa
201415 citations Open access
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Geometry and Dynamics of Gaussian Wave Packets and their Wigner Transforms
T. Ohsawa, C. Tronci
201614 citations Open access
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A PSK group modem based on digital signal processing: Algorithm, hardware design, implementation and performance
Fumio Takahata, M. Yasunaga, Y. Hirata, T. Ohsawa +1 more
198814 citations
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Semiexplicit Symplectic Integrators for Non-separable Hamiltonian Systems
B.P.A. Jayawardana, T. Ohsawa
2021Mathematics of Computation13 citations Open access
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Optimal Control Problems with Symmetry Breaking Cost Functions
A. Bloch, L. Colombo, Rohit Gupta, T. Ohsawa
2017SIAM Journal on applied algebra and geometry13 citations Open access
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Geometric Kinematic Control of a Spherical Rolling Robot
T. Ohsawa
2018Journal of nonlinear science12 citations Open access
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Controlled Lagrangians and stabilization of Euler–Poincaré mechanical systems with broken symmetry II: potential shaping
César Contreras, T. Ohsawa
2021MCSS. Mathematics of Control, Signals and Systems11 citations
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Symplectic reduction and the Lie–Poisson shape dynamics of N point vortices on the plane
T. Ohsawa
2018Nonlinearity8 citations Open access
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The Hagedorn–Hermite Correspondence
T. Ohsawa
2015Journal of Fourier Analysis and Applications8 citations Open access
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Block demodulation method for psk signal by sequential regression estimator
T. Ohsawa
19908 citations
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Discrete Dirac Structures and Variational Discrete Dirac Mechanics
M. Leok, T. Ohsawa
20087 citations
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Preservation of Quadratic Invariants by Semiexplicit Symplectic Integrators for Non-separable Hamiltonian Systems
T. Ohsawa
2022SIAM Journal on Numerical Analysis6 citations Open access
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Deterministic Hybrid Computation of Rarefied Gas Flows
T. Ohsawa, T. Ohwada
20036 citations
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Digital group demodulation system for multiple PSK carriers
T. Ohsawa, J. Namiki
19866 citations
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Clebsch canonization of Lie–Poisson systems
B.P.A. Jayawardana, P. Morrison, T. Ohsawa
2021The Journal of Geometric Mechanics5 citations Open access
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Symplectic semiclassical wave packet dynamics II: non-Gaussian states
T. Ohsawa
20175 citations Open access
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Walkstation II project
Gerald Q. Maguire, Mark T. Smith, T. Ohsawa
19955 citations
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Nonlinear Stability of Relative Equilibria in the Planar N-Vortex Problem with Non-Zero Total Circulation
T. Ohsawa
2024Physica A: Statistical Mechanics and its Applications4 citations Open access
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Controlled Lagrangians and Stabilization of Euler–Poincaré Equations with Symmetry Breaking Nonholonomic Constraints
J. S. Garcia, T. Ohsawa
2023Journal of nonlinear science4 citations Open access
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Approximation of semiclassical expectation values by symplectic Gaussian wave packet dynamics
T. Ohsawa
2020Letters in Mathematical Physics4 citations Open access
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Controlled Lagrangians and Stabilization of Euler-Poincaré Mechanical Systems with Broken Symmetry I: Kinetic Shaping
César Contreras, T. Ohsawa
2020SIAM Journal of Control and Optimization4 citations Open access
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Hamiltonian dynamics of semiclassical Gaussian wave packets in electromagnetic potentials
Nolan King, T. Ohsawa
2019Journal of Physics A: Mathematical and Theoretical4 citations Open access
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A New Phase Space Density for Quantum Expectations
J. Keller, C. Lasser, T. Ohsawa
2015SIAM Journal on Mathematical Analysis4 citations Open access
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On the Time Step Error of the DSMC
Tomokuni Hokazono, Seijiro Kobayashi, T. Ohsawa, T. Ohwada
20034 citations
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Mobile Computing and Communication
T. Ohsawa
1994IFIP Congress4 citations
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Poisson reduction of optimal control systems
T. Ohsawa
2011IEEE Conference on Decision and Control and European Control Conference3 citations
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Seamless networked mobile computing realized by wireless Internet access
T. Ohsawa, Kazuhiro Okanoue, Mohammad Madihian, K. Ishii +1 more
1996International Conference on Communications3 citations
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Bridging functionality for medium access control sublayer-applied to distributed foundation wireless medium access control
T. Ohsawa, Gerald Q. Maguire
19945th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Wireless Networks - Catching the Mobile Future.3 citations
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A broadcast protocol for computer network using satellite communication
S. Kachi, M. Morikami, T. Ohsawa, Y. Furuya
1993Proceedings of GLOBECOM '93. IEEE Global Telecommunications Conference3 citations
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Wide range and short time pull-in coherent demodulation method for PSK signal-ACE-DEMO
T. Ohsawa
1990IEEE International Conference on Communications, Including Supercomm Technical Sessions3 citations
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Small-Mass Asymptotics of Massive Point Vortex Dynamics in Bose--Einstein Condensates I: Averaging and Normal Forms
T. Ohsawa, Andrea Richaud, Roy H. Goodman
20252 citations
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Relative dynamics of vortices in confined Bose–Einstein condensates
T. Ohsawa
2025Physica A: Statistical Mechanics and its Applications2 citations Open access
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Optimal Control with Broken Symmetry of Multi-Agent Systems on Lie Groups
Efstratios Stratoglou, L. Colombo, T. Ohsawa
2022arXiv.org2 citations Open access
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Shape dynamics of N point vortices on the sphere
T. Ohsawa
2022Nonlinearity2 citations Open access
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Collective Heavy Top Dynamics
T. Ohsawa
2019Symmetry, Integrability and Geometry: Methods and Applications2 citations Open access
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The symmetric representation of the generalized rigid body equations and symplectic reduction
T. Ohsawa
2018Journal of Physics A: Mathematical and Theoretical2 citations Open access
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Semiclassical perturbations of single-degree–of–freedom Hamiltonian systems I: Separatrix splitting
T. Ohsawa, K. Yagasaki
2024Journal of Mathematics and Physics1 citations Open access
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