View source for Symmetric relation

In [[mathematics]] and other areas, a binary relation R over a set X is symmetric if it holds for all a and b in X that if a is related to b then b is related to a.

== See also ==

* [[Graph theory]]
* [[Mathematics]]

== External links == 

* [https://en.wikipedia.org/wiki/Symmetric_relation Symmetric relation] @ Wikipedia

[[Category:Graph theory]]
[[Category:Mathematics]]