Belabas K. Numerical Algorithms for Number Theory. Using Pari-GP 2021

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Belabas K. Numerical Algorithms for Number Theory. Using Pari-GP 2021

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Textbook in PDF format This book presents multiprecision algorithms used in number theory and elsewhere, such as extrapolation, numerical integration, numerical summation (including multiple zeta values and the Riemann-Siegel formula), evaluation and speed of convergence of continued fractions, Euler products and Euler sums, inverse Mellin transforms, and complex L-functions. For each task, many algorithms are presented, such as Gaussian and doubly-exponential integration, Euler-MacLaurin, Abel-Plana, Lagrange, and Monien summation. Each algorithm is given in detail, together with a complete implementation in the free Pari/GP system. These implementations serve both to make even more precise the inner workings of the algorithms, and to gently introduce advanced features of the Pari/GP language. This book will be appreciated by anyone interested in number theory, specifically in practical implementations, computer experiments and numerical algorithms that can be scaled to produce thousands of digits of accuracy. Preface Introduction Numerical extrapolation Numerical integration Numerical summation Euler products and Euler sums Gauss and Jacobi sums Numerical computation of continued fractions Computation of inverse Mellin transforms Computation of L-functions Appendix A. List of relevant GP programs Bibliography Index of Programs General Index