Aethel Audio
Start free

Symbols · Sets and logic

ℕ Natural numbers

Say it: “the natural numbers”, “N”

What it means

The counting numbers 1, 2, 3 and so on. Whether 0 is included differs between books; many state their convention, or write ℕ₀ for the set with zero.

Read aloud in real formulas

Sequences

n ∈ ℕ

Aethel says

n is in the natural numbers

n is a counting number

Typing it

LaTeX
\mathbb{N}
Unicode
U+2115

Questions

How do you say ℕ out loud?

It is usually read “the natural numbers”, and also “N”.

What does ℕ mean in maths?

The counting numbers 1, 2, 3 and so on. Whether 0 is included differs between books; many state their convention, or write ℕ₀ for the set with zero.

How do you type ℕ?

In LaTeX, write \mathbb{N}. Its Unicode code point is U+2115.

Related symbols

Hear every symbol in context.

Aethel reads the notation in your textbooks and papers aloud as part of each sentence, and highlights what it is reading. Free to start: five books and an hour of narration.