Pi and the Arithmetic Geometric Mean: Study in Analytic Number Theory and Computational Complexity (Canadian Mathematical Society Series of Monographs and Advanced Text) - Tapa dura

Sinopsis

This book presents new research revealing the interplay between classical analysis and modern computation and complexity theory. Two intimately interwoven threads run through the text: the arithmetic-geometric mean (AGM) iteration of Gauss, Lagrange, and Legendre and the calculation of pi. These two threads are carried in three directions. The first leads to 19th century analysis, in particular, the transformation theory of elliptic integrals, which necessitates a brief discussion of such topics as elliptic integrals and functions, theta functions, and modular functions. The second takes the reader into the domain of analytic complexity - just how intrinsically difficult is it to calculate algebraic functions, elementary functions and constants, and the familiar functions of mathematical physics? The answers are surprising, for the familiar methods are often far from optimal. The third direction leads through applications and ancillary material - particularly the rich interconnections between the function theory and the number theory. Included are Rogers- Ramanujan identities, algebraic series for pi, results on sums of two and four squares, the transcendence of pi and e, and a discussion of Madelung's constant, lattice sums, and elliptic invariants. Exercises are also included.

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