This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the publi

Introductory treatment steers a course between simplistic and rigorous approaches to provide a concise overview for advanced undergraduates and graduate student

The phase-integral method in mathematics, also known as the Wentzel-Kramers-Brillouin (WKB) method, is the focus of this introductory treatment. Author John Hea

The result of two decades spent developing and refining the phase-integral method to a high level of precision, the authors have applied this method to problems