is not really closed underneath subtraction (that is, subtracting 1 natural from A further won't often lead to Yet another natural), implies that N displaystyle mathbb N is really a commutative monoid with identity aspect 0. It is a absolutely free monoid on 1 generator. This commutative monoid satisfies https://vegetarianayurvedicremedies.design.blog/2025/08/18/cureayu-pure-effective-vegetarian-ayurvedic-remedies/