Yu.L.Klimontovich
Lomonosov State University, Vorob’yovy Gory, Moscow 119899, RUSSIA
The fluctuation-dissipation relations (FDR) are studied at all levels of the statistical description. The most general FDR are the relations for the fluctuations of many-body distribution functions. It is pointed out the problem of formulation of FDR is related to the problem of deriving irreversible equations based on the reversible equations of classical and quantum mechanics.