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2 “... and up-to-date listing of books recommended for further study have been added. Fritz John New York...”

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4 “...-functions (bounded mean oscillations). Fritz John's work exemplifies the unity of mathematics as well as its...”

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7 Table of Contents: “... Uniqueness Theorem -- §1.8. Fritz John’s Global Holmgren Theorem -- §1.9. Characteristics and Singular...”

8 “... in its present form. New Rochelle FRITZ JOHN September, 1955 [v] CONTENTS Introduction. . . . . . . 1...”

9 “... Differential Fritz John 73 Equations Remarks on Zero Viscosity Limit for Tosio Kato 85 Nonstationary Navier...”

10 “... Differential Equations, by Fritz John, the first volume of the series, appeared in 1971. One year prior to its...”

11 “... illustrate and supplement the theories developed in the text. Fritz John New York September, 1974 vii TABLE...”

12 “... series together with Fritz John and Joe LaSalle some 30 years ago. Later he co-founded the Texts...”