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" declared Ernest Hemingway

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In the influential essays included in this volume

An Introduction to Phase-Integral Methods " declared Ernest HemingwayThe phase integral method in mathematics, also known as the Wentzel Kramers Brillouin (WKB) method, is the focus of this introductory treatment. Author John Heading successfully steers a course between simplistic and rigorous approaches to provide a concise overview for advanced undergraduates and graduate students in mathematics and physics. Since the number of applications is vast, the text considers only a brief selection of topics and emphasizes

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