The infinity symbol is ∞, if this is what you are asking.
Infinity sign on iPhone
[infinty sign]<x<[infinity sign]
The infinity sign ∞ is sometimes called the lemniscate.
The sign for infinity is ∞
E to the power infinity, or lim en as n approaches infinity is infinity.
Infinity.
There is an app called the "character viewer"; see if you can find an infinity sign there.
Infinity.
Infinity
Infinity.
infinity
The infinity sign is called the lemniscate.