No exact model exists for three mutually gravitationally interacting bodies {three-body problem}. Approximate solutions model mass-center straight-line motions and use energy and momentum conservation laws.
two dimensions
Perhaps, physical problems in three dimensions can reduce to problems in two dimensions using information concepts. Information is on surface, instead of in volume. Projection onto surface from volume has same information about positions, momenta, and transition probabilities. For special cases, reducing to two dimensions can solve the three-body problem.
Mathematical Sciences>Calculus>Differential Equation>Kinds
3-Calculus-Differential Equation-Kinds
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0224