By Bruce P. Palka

ISBN-10: 038797427X

ISBN-13: 9780387974279

This e-book presents a rigorous but ordinary creation to the speculation of analytic features of a unmarried advanced variable. whereas presupposing in its readership a level of mathematical adulthood, it insists on no formal must haves past a valid wisdom of calculus. ranging from uncomplicated definitions, the textual content slowly and thoroughly develops the information of complicated research to the purpose the place such landmarks of the topic as Cauchy's theorem, the Riemann mapping theorem, and the theory of Mittag-Leffler may be handled with out sidestepping any problems with rigor. The emphasis all through is a geometrical one, such a lot mentioned within the large bankruptcy facing conformal mapping, which quantities primarily to a "short path" in that very important sector of advanced functionality conception. every one bankruptcy concludes with a big variety of workouts, starting from hassle-free computations to difficulties of a extra conceptual and thought-provoking nature.

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1. z + w is a complex number. 1. zw is a complex number. 2. z + w = w + z. 2. zw = wz. 3. z + (w + v) = (z + w) + v. 3. z(wv) = (zw)v. 4. There is a number α in C such that z + α = z. 4. There is a number β in C such that zβ = z. 5. 4. 5. 4. Distributive Law: D. z(w + v) = zw + zv. 25). 5 is called the negative of z, and it, too, is unique for each z. 5 is called the reciprocal of z; here, too, β is unique and so is z″ for a given z ≠ α. We proceed to prove some of the foregoing properties of C; the reader should provide proofs for the remaining ones.

Title. com We gratefully dedicate this edition to our wives Patricia Joyce Paliouras Doris Marguerite Meadows Preface A first course on complex variables taught to students in the sciences and engineering is invariably faced with the difficult task of meeting two basic objectives: (1) It must create a sound foundation based on the understanding of fundamental concepts and the development of manipulative skills, and (2) it must reach far enough so that the student who completes such a course will be prepared to tackle relatively advanced applications of the subject in subsequent courses that utilize complex variables.

24). 1Plot the numbers 3 + 4i, 1 − i, − 1 + i, 2, − 3i, e + πi, and −2 + i. 2Determine whether or not the points − i, 2 + i and − 3 + 2i form a right triangle. 3Prove that | z2 | = | z |2 is true for all z. 4Write each of the following numbers in polar form. (a)−1. (b)3. (c)−4i (d)−2 + 2i. (e) (f) (g)1 − i. (h)2 − i. (i) (j)2 − i. 4 by transforming your answers back to rectangular form. 4 to perform the following operations in polar form. (a)(− 2 + 2i)(l − i). (b)−4i(−2 + 2i). (c)(1 − i)6. (d)(−2 + 2i)15.

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An Introduction to Complex Function Theory by Bruce P. Palka

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