Routing (electronic design automation)

Quantum mechanics

Theoretical physics

Engineering

Rotating black hole

Computer science

Classical mechanics

Sense (electronics)

Computer network

Routing protocol

Physics

Degrees of freedom (physics and chemistry)

Angular momentum

Link-state routing protocol

Rotational symmetry

Black hole (networking)

Mechanics

Electrical engineering

Physical Review Letters

A theorem is described which establishes the claim that in a certain canonical sense the Kerr metrics represent "the" (rather than merely "some possible") exterior fields of black holes with the corresponding mass and angular-momentum values.

Axisymmetric Black Hole Has Only Two Degrees of Freedom