 ##  [Mori–Zwanzig Formalism](/mori-zwanzig-formalism) 

  ##  [Mori–Zwanzig Formalism](https://mathlogic.quantumdictionary.io/mori-zwanzig-formalism-0) 

  
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- Natural &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 
Definition

A projection-operator framework that exactly decomposes full dynamical evolution into equations for a chosen set of resolved variables plus memory kernels and fluctuating (orthogonal) forces representing unresolved scales, yielding generalized Langevin-type equations as reductions.