Lectures on the Calculus of Variations by Oskar Bolza
Publisher: The University of Chicago press 1904
ISBN/ASIN: 141818201X
Number of pages: 304
The emphasis lies entirely on the theoretical side: I have endeavored to give clear definitions of the fundamental concepts, sharp formulations of the problems, and rigorous demonstrations. Difficult points, such as the proof of the existence of a 'field', the details in Hilbert's existence proof, etc., have received special attention.
Mathematics Analysis & Calculus Calculus of Variations

---