Riemann-Christoffel covariant tensor equations of motion and differential geometry
Effective potentials and geometry of constraints and Lagrange multipliers
Lorentz resonance response and Fourier analysis
Normal modes and U(2) Euler angle geometry of pair resonance
Fourier and symmetry analysis of wave dispersion and parametric resonance
Coulomb and central-force orbits and trajectory envelopes
Rutherford orbit geometry
U(2) and R(4) geometry of oscillator and Coulomb dynamics
Rutherford, Stark, Zeeman, and 2-center orbits
2-particle scattering.
Angular rotation and momentum of gyros, tops, spacecraft, and molecules
Euler-angle geometry and rotational energy surface analysis of soft rotors
Calculus of variation and Hamilton-Jacobi equations
Geometry of contact transformations
Semiclassical action quantization by Davis-Heller phase color addition