Fascinating the number of pi. Make J.-P.

If there was a rating of the most famous numbers, then Pi would probably be among the leaders. People tried to solve the secrets of this incomprehensible number for centuries. Everyone remembers that it has something to do with geometry. But only? Far from. Pi is present in almost all areas of mathematics, demonstrating new properties each time. Only the pursuit of new signs after the comma is fascinating, like a dashing detective plot.

The book is written for readers with different levels of memories of the school course of mathematics.