 ##  [Mortar Method](/mortar-method) 

  ##  [Mortar Method](https://mathlogic.quantumdictionary.io/mortar-method-0) 

  
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**Mathematics &amp; Logic Dictionary**

 
Definition

A numerical coupling method that enforces weak continuity across nonmatching interfaces by introducing mortar (interface) spaces together with Lagrange multipliers, dual bases, or projection constraints to glue adjacent discretizations.