H. Ralph Lewis

Available identifiers

zbMath Open lewis.h-ralphMaRDI QIDQ228320

List of research outcomes

Publication	Date of Publication	Type
Hamilton’s principal function and integration by quadratures for an N-degree-of-freedom non - autonomous system given N invertible invariants in involution	2012-01-02	Paper
https://portal.mardi4nfdi.de/entity/Q2751807	2002-03-04	Paper
A comparison of symplectic and Hamilton's principle algorithms for autonomous and non-autonomous systems of ordinary differential equations	2002-02-07	Paper
https://portal.mardi4nfdi.de/entity/Q2751808	2002-02-06	Paper
Quantum Action-Angle Variables for the Harmonic Oscillator	2000-07-16	Paper
Lewis, Lawrence, and Harris Reply:	2000-07-16	Paper
Periodic non-singular invariant series for periodic perturbations of autonomous one-degree-of-freedom Hamiltonians	2000-03-07	Paper
Time-dependent perturbation theory for the construction of invariants of Hamiltonian systems	2000-03-07	Paper
The use of Hamilton's principle to derive time-advance algorithms for ordinary differential equations	1999-09-29	Paper
A second invariant for one-degree-of-freedom, time-dependent Hamiltonians given a first invariant	1996-11-26	Paper
Extension of Giacomini’s results concerning invariants for one-dimensional time-dependent potentials	1996-01-01	Paper
Representations of one-dimensional Hamiltonians in terms of their invariants	1992-06-28	Paper
Variational nature of dispersion equations revisited	1992-06-25	Paper
Physical constraints on the coefficients of Fourier expansions in cylindrical coordinates	1992-06-25	Paper
The Liouville theorem and accurate plasma simulation	1987-01-01	Paper
Invariants for time-dependent potentials: Use of self-similar techniques	1987-01-01	Paper
Rational functions of momentum as invariants for one-dimensional, time-dependent potentials: Basic theory	1987-01-01	Paper
Rational functions of momentum as invariants for one-dimensional, time-dependent potentials: Two- and three-resonance cases	1987-01-01	Paper
Exact invariants in resonance form for time-dependent potentials	1986-01-01	Paper
Kinetic tilting stability of field-reversed configurations	1986-01-01	Paper
A finite-Larmor-radius dispersion functional for the Vlasov-fluid model	1986-01-01	Paper
https://portal.mardi4nfdi.de/entity/Q3768439	1986-01-01	Paper
A resonance formulation for invariants of particle motion in a one- dimensional time-dependent potential	1985-01-01	Paper
Invariants for dissipative nonlinear systems by using rescaling	1985-01-01	Paper
A novel Lagrangian formulation for self-consistent fluid mechanics problems	1985-01-01	Paper
The dispersion functional for multidimensional equilibria	1985-01-01	Paper
First integrals for some nonlinear time-dependent Hamiltonian systems	1984-01-01	Paper
Exact time-dependent solutions of the Vlasov–Poisson equations	1984-01-01	Paper
A direct approach to finding exact invariants for one-dimensional time-dependent classical Hamiltonians	1982-01-01	Paper
Exact invariants for a class of time-dependent nonlinear Hamiltonian systems	1982-01-01	Paper
https://portal.mardi4nfdi.de/entity/Q3962522	1982-01-01	Paper
Free and forced m=0 oscillations of a sharp-boundary Vlasov-fluid screw pinch	1980-01-01	Paper
https://portal.mardi4nfdi.de/entity/Q3895180	1980-01-01	Paper
Stability of Bernstein–Greene–Kruskal equilibria	1979-01-01	Paper
Computation of Fourier integrals of exponentials of truncated Fourier series	1973-01-01	Paper
Energy-conserving numerical approximations for Vlasov plasmas	1970-01-01	Paper

Research outcomes over time

Doctoral students

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Known relations from the MaRDI Knowledge Graph

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This page was built for person: H. Ralph Lewis