Covers the dynamics of stellar orbits in the Milky Way, focusing on the Sun's neighborhood and the significance of Oort constants and epicyclic frequencies.

Potential Theory: Spherical Systems

Explores potential theory in spherical systems, including Nobel Prize-winning research on galactic centers.

Galactic Orbits and Oort Constants

Explores stellar orbits in galaxies, focusing on Oort constants, integrals of motion, and galactic potentials.

Galaxies: Evolution and Morphology

Explores the evolution and morphology of galaxies, from elliptical galaxies lacking star formation to spiral galaxies with young stars.

Stellar Orbits: Stability and Resonances

Explores the stability of orbits, effective potential shape, and resonances in stellar dynamics.

Spiral Structures in Rotating Systems

Explores the stability of rotating systems, focusing on spiral structures and the winding problem in observed spirals.