Sinposis

"THE PURPOSE OF THIS TEXTBOOK IS TO GIVE A COMPREHENSIVE INTRODUCTION TO THE CLASSICAL AND MODERN CALCULUS OF VARIATIONS; IT SERVES AS USEFUL REFERENCE TO ADVANCED UNDERGRADUATE AND GRADUATE STUDENTS AS WELL AS RESEARCHERS IN THE FIELD. _ THIS BOOK IS INTERESTING TO A READING SEMINAR OR A COMPANION FOR SELF-STUDY." (HENGYOU LAN, ZBMATH 1402.49001, 2019)