 ##  [Ill-Posedness](/ill-posedness) 

  ##  [Ill-Posedness](https://mathlogic.quantumdictionary.io/ill-posedness-0) 

  
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- Natural &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 
Definition

A situation where one or more of the hallmarks of well-posedness—existence, uniqueness, or continuous dependence on data—fail for a mathematical problem, often producing nonphysical, nonunique, or unstable solutions that amplify data errors.