# Greek Small Letter Epsilon

ε
Symbol Format Data
ε Code Point
U+03B5
TeX
\epsilon
SVG

## Usage

The (epsilon) symbol is used in math as a variable to reperesent error bounds. For example, in calculus, limits are formally defined using the (epsilon delta) definition[1].

## Related

The Greek small letter delta (δ) is used in math as a variable. It appears in calculus in epsilon delta notation.

The capital Greek letter (Ε).

## References

1. (ε, δ) "epsilon delta" definitions of limits
Grant Sanderson (3Blue1Brown)