From the History of 18th Century Mathematics . For the upcoming 300th anniversary of Leonard Euler (1707-1783): Issue 3" is a fascinating and deep dive into the world of 18th-century mathematics. Created by a team of authors, who strive not only to celebrate the outstanding legacy of one of the greatest mathematicians of all time but also to reveal to the reader the richness and variety of mathematical thought of that period. This work is dedicated to the anniversary of Leonard Euler, whose influence on mathematics and related sciences is difficult to overestimate. The book contains articles that cover various aspects of 18th-century mathematical science, including number theory, geometry, analysis, and mechanical sciences. Each author brings to the text his unique view of the development of mathematics, exploring both the achievements of Euler and his contemporaries, such as Newton, Leibniz and others. This allows us to create a holistic picture of the scientific progress of the time. The book will be of interest not only to professional mathematicians and scientists, but also to everyone who is fond of the history of science, philosophy and culture. Students and teachers researching mathematics will find valuable materials for their research and lectures here. History buffs will also appreciate the in-depth analysis of the context in which mathematical ideas developed, as well as their impact on modern science and technology. One of the key topics raised in the book is the relationship between mathematics and other sciences, such as physics and astronomy. The authors show how the mathematical discoveries of the 18th century became the basis for further research and development in these areas. This book not only talks about mathematical concepts, but also demonstrates how they shaped our understanding of the world. The style of the authors is distinguished by scientific rigor and at the same time the availability of presentation . They strive to make complex ideas understandable to a wide audience, which makes the book attractive to readers with different levels of training. Each issue of the series "From the history of mathematics of the XVIII century" is a separate fragment of a large mosaic, and the third issue is no exception. He continues the tradition of deep and thoughtful analysis characteristic of the previous parts. If you are interested in topics such as the history of mathematics, biographies of great scientists, or want to better understand how mathematics affects our lives, this book will be a real find for you. It opens the door to a world where numbers and formulas become alive and their creators are the true heroes of science. In conclusion, "From the History of 18th Century Mathematics. For the upcoming 300th anniversary of Leonard Euler (1707-1783): Issue 3 is not just a book about mathematics, it is a journey into the past that allows us to see how ideas and discoveries shaped our present. Read it, and you will not only enrich your knowledge, but you will also be able to take a fresh look at the world around you.