1. In mathematics, n stands for natural number set (nonnegative integer set). N* stands for a set of positive integers.
2. In chemistry, chemical symbols representing elemental nitrogen also represent the number of particles and equivalent concentration (abbreviation of equivalent concentration). In organic chemistry, it also means that the methyl group is connected to the nitrogen atom, such as N- methylpropylamide.
3.n stands for the neutral line in alternating current.
4.n is on the map, pointing north.
During the train travel in China, the express train represents the passengers in the pipeline.
6. Please note that the Newton symbol of force is not n, but the Greek letter ν (nu).
7.n stands for knight in chess, because its initials are the same as those of the king, which is easy to be confused.
8, n Physically, the unit of force is Newton, abbreviated as cow, and represented by the symbol n.
Expand knowledge:
In mathematics, n represents a set of numbers, that is, a set of natural numbers, that is, a set of non-negative integers, and can also be represented by n, including 0 and positive integers. N+ represents a positive integer, that is, a positive integer other than 0. For example: 1, 2, 3; Using n to represent the set of numbers in mathematics greatly simplifies the writing of mathematics.
So why use a series of ancient Greek letters to express various meanings in mathematics? Because in an earlier era, there were many great mathematicians who used letters instead to express some meanings in mathematics conveniently. For example, x is used to represent unknowns and independent variables, y is used to represent dependent variables, and r is used to represent all real numbers and angles. Very versatile.
What is the function of mathematics?
Mathematical calculation appears around us every day and has become an indispensable part of our daily life. For example, we need to use mathematics to calculate the price of anything. Through mathematical calculation, you can also improve your thinking ability and imagination. So mathematics is very important to us. For convenience, we need to remember the special symbols in mathematics.