Definition:Root


 * Analysis:
 * Root (Analysis): If $y^m = x$ then $x = \sqrt[m] y$, and $x$ is the $m$th root of $y$.
 * Root of a mapping (or function): The roots of a mapping $f$ are the values of $x$ for which $\map f x = 0$.
 * Root of a polynomial: the roots of a polynomial $f$ are the values of $x$ for which $\map f x = 0$.


 * Graph Theory
 * Root Node: A rooted tree is a tree which has a particular node distinguished from the others and called the root node, or just root.


 * Mathematical Logic
 * Root of a propositional tableau: The root of a propositional tableau $T$ is its hypothesis set $\mathbf H$, which is considered to be attached to the root node of $T$.

Also see

 * Definition:Radical