A quantity that is nonzero everywhere is said to be nonvanishing. For instance, the values of are nonvanishing for real , while those of are not (since vanishes at ).

# Nonvanishing

## See also

Nonzero, Vanish Identically, Vanishing, Zero## Explore with Wolfram|Alpha

## Cite this as:

Weisstein, Eric W. "Nonvanishing." From
*MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/Nonvanishing.html