What it means
The whole numbers, positive, negative and zero. The Z comes from the German Zahlen, numbers.
Read aloud in real formulas
k ∈ ℤ
Aethel says
k is in the integers
k is a whole number
Typing it
- LaTeX
- \mathbb{Z}
- Unicode
- U+2124
Questions
How do you say ℤ out loud?
It is usually read “the integers”, and also “Z”.
What does ℤ mean in maths?
The whole numbers, positive, negative and zero. The Z comes from the German Zahlen, numbers.
How do you type ℤ?
In LaTeX, write \mathbb{Z}. Its Unicode code point is U+2124.