Symbols and notation
Infinity symbol
The infinity symbol describes unbounded growth, extent or continuation; it is not an ordinary real number on which standard arithmetic rules always apply.
In one sentence
What does Infinity symbol mean?
The infinity symbol describes unbounded growth, extent or continuation; it is not an ordinary real number on which standard arithmetic rules always apply.
How it is written
∞
A compact example
The sequence 1, 2, 3, … continues without a largest term and is described as tending toward infinity.
Other names and search terms
∞, infinity, unbounded symbol, infinite sign.
Where this fits
When should you learn Infinity symbol?
The first encounter is not the final level. Many ideas begin visually, become computational in high school and become formal in college.
- 1Pre-high schoolPrepare foundations
- 2High schoolUsually introduced
- 3CollegeGreater depth
- 4AdvancedGreater depth
- Mathematical notation
- Algebra
- Reading equations
- Fluent formula reading
- Advanced mathematics
Recognising notation reduces friction when formulas become denser.
Open the Zero-to-QM pathClear answers
Questions about Infinity symbol
What does Infinity symbol mean in mathematics?
The infinity symbol describes unbounded growth, extent or continuation; it is not an ordinary real number on which standard arithmetic rules always apply.
How is Infinity symbol written?
A common notation is ∞.
What is an example of Infinity symbol?
The sequence 1, 2, 3, … continues without a largest term and is described as tending toward infinity.