Definition:Permutable


 * Number Theory and Recreational Mathematics:
 * Permutable prime: a prime number $p$ which has the property that all anagrams of $p$ are prime.


 * Abstract Algebra:
 * Permutable subgroups: subgroups $H$ and $K$ of a group such that $H \circ K = K \circ H$.
 * Permutable elements: another term for commuting elements.

Also see

 * Definition:Commutative