# BBGKY hierarchy

The **BBGKY hierarchy** consists of distribution functions, named after Bogolyubov, Born, Green, Kirkwood and Yvon.
The BBGKY hierarchy is a system of equations for the dynamical behavior of fluids,
with the important extension to dense liquids. The equations are exact, and relate the phase space
probability density for *n*+1 particles to the phase space
probability density for *n* particles . In Ref. 2 it is shown that the H-theorem follows from the Kirkwood superposition approximation.

## See also[edit]

## References[edit]

- M. Born and H. S. Green "A General Kinetic Theory of Liquids. I. The Molecular Distribution Functions", Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences
**188**pp. 10-18 (1946) - H. S. Green "A General Kinetic Theory of Liquids. II Equilibrium Properties", Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences
**189**pp. 103-117 (1947)