Most mathematical models do not admit exact solutions. Asymptotic and perturbation methods provide powerful techniques for obtaining approximate solutions, which allow one to draw physical conclusions ...

Your Artstor image groups were copied to Workspace. The Artstor website will be retired on Aug 1st. American Journal of Mathematics Vol. 38, No. 3, Jul., 1916 A Class of Asymptotic Orbits in the Prob.

Astronomers have discovered a new post-asymptotic giant branch (PAGB) star in a Galactic globular cluster known as ESO 37-1 (or E3 for short) and derived its fundamental parameters.