##  [Quandle](/quandle) 

  ##  [Quandle](https://puremath.quantumdictionary.io/quandle-0) 

  

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- Mathematics & Logic -

**Pure Mathematics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

An idempotent rack: a set X with a binary operation ▷ that is left self-distributive, each left translation L_a is a bijection, and additionally a ▷ a = a for all a. Quandles abstract the conjugation operation and are widely used in knot invariants.