Motivated by questions about which functions could be represented by Dirichlet series, Harald Bohr founded the theory of almost periodic functions in the 1920s. This beautiful exposition begins with a discussion of periodic functions before addressing the almost periodic case. An appendix discusses almost periodic functions of a complex variable. This is a beautiful exposition of the theory of Almost Periodic Functions written by the creator of that theory; translated by H. Cohn.
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Book Description American Mathematical Society, 1947. Hardcover. Book Condition: New. Never used!. Bookseller Inventory # P11082840027X
Book Description American Mathematical Society, 1947. Hardcover. Book Condition: New. Reprint. Bookseller Inventory # DADAX082840027X