What can be read to understand the "mathematical" language?

Question

Mathematics

In the process of studying algorithms, I often come across all sorts of mathematical formulas that I don’t always understand, for example:



What can I read to start understanding them, at least at a basic level? I did not graduate from institutes, mostly I studied development myself) Algorithms are needed for interviews in Western companies.

Answer 1

Table of mathematical symbols

Answer 2

Go to the website of Moscow State University, Faculty of Mechanics and Mathematics, read the training program and master it on your own using textbooks and problem books. If this works out :)