C.Y. Wang, Ph.D., is a Professor in the Department of Mathematics and Adjoint Professor in the Department of Mechanical Engineering at Michigan State University, East Lansing.  He received his B.S. from Taiwan University and Ph.D. from the Massachusetts Institute of Technology.  Dr. Wang has authored two book and approximately 550 journal articles. He has also served as a technical editor of Applied Mechanics Reviews.

• Nondimensionalization and scaling.- Asymptotic expansion.- Basic theory.- Eigenvalue problems.- Perturbation of integrals.- The phase plane.- Periodic and almost periodic solutions.- Singular perturbation and boundary layers.- Other singular problems.- Improving asymptotic series.- Examples in mechanics.

“This textbook can be used by undergraduate and graduate students and can also serve as a comprehensive guide for those seeking an understanding of perturbation techniques and their practical applications. ... The author's pedagogical approach, marked by clarity, coherence, and a student-centered perspective, makes this textbook reader friendly and accessible. References to classical texts at the end of each chapter enhance the educational experience, facilitate continuous learning and support students in further exploration of the subject matter.” (Svitlana P. Rogovchenko, Mathematical Reviews, May, 2024)