A-

Hello readers! Today I would like to talk about the concept “A”, which many of us are familiar with from school. It is found in every letter of the alphabet and is the basis for understanding various languages ​​of the world. But I would like to consider it not as a letter, but as a symbol that is often used in mathematics, programming and other sciences.

Mathematicians use the symbol "A" to represent the set of all real numbers. This means "A" stands for everything