Hansjörg Kielhöfer is a Professor at the University of Augsburg, Germany.

“This is a friendly and well-written introduction to a topic of great interest in modern analysis.” (M. Kunzinger, Monatshefte für Mathematik, Vol. 193 (4), 2020)“This book is an introductory textbook … . The textbook is appropriate for students with solid background in calculus and linear algebra but without preliminary knowledge of variational analysis. … this textbook is useful for beginning graduate students in physical, engineering, and mathematical sciences having a rigorous theoretical background.” (Mihail Voicu, zbMATH 1390.49001, 2018)

• Introduction.- The Euler-Language Equation.- Variational Problems with Constraints.- Direct Methods in the Calculus of Variations.- Appendix.- Solutions of the Exercises.

Hansjörg Kielhöfer is a Professor at the University of Augsburg, Germany.

“This is a friendly and well-written introduction to a topic of great interest in modern analysis.” (M. Kunzinger, Monatshefte für Mathematik, Vol. 193 (4), 2020)“This book is an introductory textbook … . The textbook is appropriate for students with solid background in calculus and linear algebra but without preliminary knowledge of variational analysis. … this textbook is useful for beginning graduate students in physical, engineering, and mathematical sciences having a rigorous theoretical background.” (Mihail Voicu, zbMATH 1390.49001, 2018)

• Introduction.- The Euler-Language Equation.- Variational Problems with Constraints.- Direct Methods in the Calculus of Variations.- Appendix.- Solutions of the Exercises.