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Sequences (Mathematics) --- Number Theory --- Sieves (Mathematics)
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Sequences (Mathematics). --- Number theory. --- Sieves (Mathematics).
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Sieve theory has a rich and romantic history. The ancient question of whether there exist infinitely many twin primes (primes p such that p+2 is also prime), and Goldbach's conjecture that every even number can be written as the sum of two prime numbers, have been two of the problems that have inspired the development of the theory. This book provides a motivated introduction to sieve theory. Rather than focus on technical details which can obscure the beauty of the theory, the authors focus on examples and applications, developing the theory in parallel. The text can be used for a senior level undergraduate course or an introductory graduate course in analytic number theory, and non-experts can gain a quick introduction to the techniques of the subject.
Sieves (Mathematics) --- Mathematics. --- Math --- Science --- Number sieves --- Number theory
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Sequences (Mathematics) --- Sieves (Mathematics) --- Suites (Mathématiques) --- Cribles (Mathématiques)
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Number theory --- Sieves (Mathematics) --- 511 --- Number sieves --- Sieves (Mathematics). --- 511 Number theory --- Theorie des nombres --- Theorie multiplicative
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This book is an elaboration of a series of lectures given at the Harish-Chandra Research Institute. The reader will be taken through a journey on the arithmetical sides of the large sieve inequality when applied to the Farey dissection. This will reveal connections between this inequality, the Selberg sieve and other less used notions like pseudo-characters and the $Lambda_Q$-function, as well as extend these theories. One of the leading themes of these notes is the notion of so-calledemph{local models} that throws a unifying light on the subject. As examples and applications, the authors present, among other things, an extension of the Brun-Tichmarsh Theorem, a new proof of Linnik's Theorem on quadratic residues and an equally novel one of the Vinogradov three primes Theorem; the authors also consider the problem of small prime gaps, of sums of two squarefree numbers and several other ones, some of them being new, like a sharp upper bound for the number of twin primes $p$ that are such that $p+1$ is squarefree. In the end the problem of equality in the large sieve inequality is considered and several results in this area are also proved.
Mathematics. --- Mathematics, general. --- Sieves (Mathematics) --- Number sieves --- Number theory --- Math --- Science
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Nearly a hundred years have passed since Viggo Brun invented his famous sieve, and the use of sieve methods is constantly evolving. As probability and combinatorics have penetrated the fabric of mathematical activity, sieve methods have become more versatile and sophisticated and in recent years have played a part in some of the most spectacular mathematical discoveries. Many arithmetical investigations encounter a combinatorial problem that requires a sieving argument, and this tract offers a modern and reliable guide in such situations. The theory of higher dimensional sieves is thoroughly explored, and examples are provided throughout. A Mathematica® software package for sieve-theoretical calculations is provided on the authors' website. To further benefit readers, the Appendix describes methods for computing sieve functions. These methods are generally applicable to the computation of other functions used in analytic number theory. The appendix also illustrates features of Mathematica® which aid in the computation of such functions.
Mathematics --- Sieves (Mathematics) --- Number theory. --- Number study --- Numbers, Theory of --- Algebra --- Number sieves --- Number theory
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