# level set

Let $A$ and $B$ be sets and $f$ a function mapping $A$ into $B$. Then the sets

 $\{x\mid f(x)=y\}$

where $y\in B$ are known as the level sets (or fibres) of $f$.

Title level set LevelSet 2013-03-22 14:53:20 2013-03-22 14:53:20 yark (2760) yark (2760) 6 yark (2760) Definition msc 03E20 Fibre ContourLine