Three Pearls of Number Theory – Khinchin — Mir Books

In this post, we will see the book Three Pearls of Number Theory by A. Y. Khinchin. About the book This little book is devoted to three theorems in arithmetic, which, in spite of their apparent simplicity, have been the objects of the efforts of many important mathematical scholars. The proofs which are presented here […]

Three Pearls of Number Theory – Khinchin — Mir Books

What is distance? (Popular Lectures in Mathematics) – Shreider — Mir Books

In this post, we will see the book What Is Distance? by Yu. A. Shreider. This is part of Popular Lectures in Mathematics series. About the book This introduction to the theory of metric spaces carries the student through the motivation, development, and application of an abstract mathematical concept. Yu. A. Shreider begins with a […]

What is distance? (Popular Lectures in Mathematics) – Shreider — Mir Books

1913: The Inauguration of a Record-Breaking Bridge in Pennsylvania’s Lehigh Valley Region — Transportation History

November 17, 1913 The Eighth Street Bridge in Allentown, Pennsylvania, was formally opened to traffic. At the time of its debut, this 17-arch structure — measuring 2,650 feet (810 meters) in length and 138 feet (42 meters) in height — was the world’s longest and highest concrete bridge. This bridge came into existence because the Lehigh […]

1913: The Inauguration of a Record-Breaking Bridge in Pennsylvania’s Lehigh Valley Region — Transportation History

Chet went to Lehigh University, graduating in 1912. The bridge was probably under construction in part while he was there.