 ##  [Unsatisfiability](/unsatisfiability) 

  ##  [Unsatisfiability](https://mathlogic.quantumdictionary.io/unsatisfiability-0) 

  
 [![Mathematics & Logic Dictionary](/sites/default/files/styles/large/public/2026-01/Mathematics%20%26%20Logic.png.webp?itok=UhtTRPnp)](/topic-specific-dictionaries/natural-formal-sciences/mathematics-logic)

- Natural &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 
Definition

Property of a formula or set of formulas for which no interpretation, model, or assignment makes every formula in the set true; equivalently, the set has an empty model class.