The quantity is a property, is among the basic classes of things, is referred to as a quantulum and is expressed by identifiers. Aristotle regarded quantity as a fundamental, ontological, scientific category. Number theory covers the topics of the discrete quantities. The theory fits elementary school mathematics, the less, abstract, topological, algebraic structures. Distinction has been made between intensive quantity. The magnitude does depend on the extent of the entity.

Property, Basic classes of things