GlyphIndexLimit notation
As n → ∞, 1/n → 0.
The sequence index grows without bound; the fractions approach zero.
Infinity symbol
The infinity symbol ∞ describes something unbounded, often in a limit or interval. Its mathematical meaning depends on the expression around it.
INFINITY
Appearance can vary by font.
Character details
♡→✦
3 code pointsMeaning and context
The infinity symbol ∞ describes something unbounded, often in a limit or interval. Its mathematical meaning depends on the expression around it.
How to use it
In a limit, state which variable grows without bound. In an interval such as (0, ∞), infinity is not an included real endpoint.
Examples
Interval label
(0, ∞)
This labels positive real values; infinity is not an included real endpoint.
Similar shapes, different characters
Digit eight
U+0038A rotated-looking shape is not the same text character.
Right arrow
U+2192An arrow can express the direction of a limit, while ∞ names the unbounded endpoint.
DetailsSources and method
- Unicode 18.0.0 character database — Pinned standard character identities and properties; the application computes UTF encodings from the original text.
- Unicode character code charts — Reference glyphs are not a guarantee of the appearance in a user’s font.