# Real Numbers¶

In maths^{1}, a real number is a number that can be used along a number-line. They are called *real* numbers to differentiate them from imaginary numbers. The set of all reals is denoted with \mathbb{R}.

## Backlinks¶

- A Programmers Introduction to Mathematics
- Topic: Maths
- Blackboard Bold
- \\mathbb{R} denotes the set of real numbers

- Language: Function over a set
- Tuples
- \\mathbb{R}^3 denotes a set of 3-tuples of real numbers, as an example. I.e (4, 1023, -3) \\in \\mathbb{R}^3 (inclusion in a set)