https://archive.org/embed/lyusternik-the-shortest-lines-variational-problems-little-mathematics-library

In this post, we will see another book from the Little Mathematics Library titled The Shortest Lines Variational Problems by Lyusternik. About the book A pamphlet based on lectures read by the author to Moscow University’s schools mathematics club. Deals in an elementary way with a number of variational problems, such as finding the shortest […]

The Shortest Lines (Little Mathematics Library) – Lyusternik — Mir Books