##  [Ill-Posed Problem](/index.php/ill-posed-problem) 

  ##  [Ill-Posed Problem](https://natural.quantumdictionary.io/ill-posed-problem-0) 

  

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**Natural & Formal Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A problem that violates one or more of the usual well-posedness criteria (existence, uniqueness, continuous dependence of solutions on data), so that solutions may not exist, may not be unique, or may change discontinuously under arbitrarily small perturbations of the input data.