König's Theorem


 * König's Theorem (Set Theory): an equivalent formulation to the Axiom of Choice.


 * König's Theorem (Graph Theory): on the number of edges in a bipartite graph.


 * König's Theorem (Kinetics): the kinetic energy of a system of particles is the kinetic energy associated to the movement of the center of mass and the kinetic energy associated of the movement of the particles relative to the center of mass.

There is also:


 * König's Lemma: a sufficient condition for an infinite graph to have an infinitely long path.


 * A special case of this: König's Tree Lemma.