 ##  [Restriction Operator](/restriction-operator) 

  ##  [Restriction Operator](https://mathlogic.quantumdictionary.io/restriction-operator-0) 

  
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- Natural &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 
Definition

A linear or nonlinear operator that transfers state or field data from a fine computational grid or model to a coarser representation by aggregation, averaging, sampling, or projection, used in multilevel methods, coupling, and analysis.