---
title: "natural number"
source: https://www.jemoka.com/posts/kbhnatural_numbers/
---

natural numbers (\(\mathbb{N}\)) are the counting numbers: 1,2,3,4&hellip;.
Zero is not part of it; this produces interesting results like set of natural number under addition is not a group because there is no identity (tbh nor inverse (inverse of 1 is -1 which is not in the set.))
