In the world, zero is the starting point of natural numbers, but China's Hua is a master of mathematics. He is a student of number theory. There are very few zeros in number theory and many subjects. With the influence of China, China's habit does not include zero. After 1993, natural leaves in China started from scratch in order to be in line with international standards.
natural number
Wikipedia, the encyclopedia of freedom
Natural number, namely: 0 note 1, 1, 2, 3, 4. ...
Natural number is the number generated when people count (such as "there are three apples"), so the number used to represent the number of objects is called natural number. There is no object, of course it can be represented by "0", so "0" is also a natural number.
After dividing the natural number by "0", it can also be used for sorting (such as "ranking fourth").
The deeper features of natural numbers, such as the distribution of prime numbers, belong to the research scope of number theory.
Mathematicians generally represent a set of natural numbers. This set is infinite and countable.
Natural numbers start with the number of numbers. The ancient Greeks first studied its abstract features, among which Pythagoras regarded it as the foundation of the universe. Other ancient civilizations have also made great contributions to its research, especially India's acceptance of 0.
As early as 400 BC, Babylonians used zero as a number. In 200 AD, the Mayans regarded zero as a number, but they did not communicate with other civilizations. Modern concept was put forward by Indian scholar Brahmagupta in 628 AD and spread to Europe by Arabs. At first, Europeans still resisted the number zero and thought that zero was not a "natural" number.
At the end of 19, set theorists give a stricter definition of natural numbers. According to this definition, it is more convenient to include zeros in natural numbers (corresponding to empty sets).