# What is the opposite of epsilon

• I
Is there a notation for the opposite of epsilon (infinitesimal) in the way that infinity is the opposite of zero?

jedishrfu
Mentor
I don't think there is a definitive term, I've seen people use these terms:
- immeasureable
- infinite

Ssnow
Gold Member
For every ##\varepsilon >0## ''very small'' you have ##\varepsilon^{-1}=\frac{1}{\varepsilon}## is ''very big'', in general there is no a preferred symbol to denote this ...

Usually, people like to use capital letters for this, such as ##H## or ##N##.

jedishrfu
Mentor
What does the H or N stand for?

fresh_42
Mentor
Perhaps ##N## for number such as ##N(ε)##. I've also seen ##C## for a constant. But I've never seen a huge ##H##.

wrobel