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Analytic Number Theory
 A.M.S Colloquium Publ
"... Key words and phrases. Analytic number theory, distribution of ..."
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Cited by 248 (28 self)
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Key words and phrases. Analytic number theory, distribution of
The Spectrum of Multiplicative Functions
"... this paper is to understand the spectrum. Although we can determine the spectrum explicitly only in one interesting case (where S = [\Gamma1; 1]), we are able, in general, to qualitatively describe it and obtain some of its geometric structure. For example, qualitatively, the spectrum may be describ ..."
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Cited by 19 (11 self)
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this paper is to understand the spectrum. Although we can determine the spectrum explicitly only in one interesting case (where S = [\Gamma1; 1]), we are able, in general, to qualitatively describe it and obtain some of its geometric structure. For example, qualitatively, the spectrum may be described in terms of Euler products and solutions to certain integral equations. Geometrically, we can always determine the boundary points of the spectrum (that is, the elements of \Gamma(S) " T) and show that the spectrum is connected. Moreover we can bound the spectrum, and make conjectures about some of its properties, though we have no precise idea of what it usually looks like. We begin with a few immediate consequences of our definition:
On quantum ergodicity for linear maps of the torus
 COMM. MATH. PHYS
, 1999
"... We prove a strong version of quantum ergodicity for linear hyperbolic maps of the torus (“cat maps”). We show that there is a density one sequence of integers so that as N tends to infinity along this sequence, all eigenfunctions of the quantum propagator at inverse Planck constant N are uniformly ..."
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Cited by 12 (3 self)
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We prove a strong version of quantum ergodicity for linear hyperbolic maps of the torus (“cat maps”). We show that there is a density one sequence of integers so that as N tends to infinity along this sequence, all eigenfunctions of the quantum propagator at inverse Planck constant N are uniformly distributed. A key step in the argument is to show that for a hyperbolic matrix in the modular group, there is a density one sequence of integers N for which its order (or period) modulo N is somewhat larger than √ N.
Chebyshev’s bias for composite numbers with restricted prime divisors
 Math. Comp
, 2005
"... Abstract. Let π(x; d, a) denote the number of primes p ≤ x with p ≡ a(mod d). Chebyshev’s bias is the phenomenon for which “more often” π(x; d, n)>π(x; d, r), than the other way around, where n is a quadratic nonresidue mod d and r is a quadratic residue mod d. Ifπ(x; d, n) ≥ π(x; d, r) for every x ..."
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Cited by 12 (6 self)
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Abstract. Let π(x; d, a) denote the number of primes p ≤ x with p ≡ a(mod d). Chebyshev’s bias is the phenomenon for which “more often” π(x; d, n)>π(x; d, r), than the other way around, where n is a quadratic nonresidue mod d and r is a quadratic residue mod d. Ifπ(x; d, n) ≥ π(x; d, r) for every x up to some large number, then one expects that N(x; d, n) ≥ N(x; d, r) for every x. Here N(x; d, a) denotes the number of integers n ≤ x such that every prime divisor p of n satisfies p ≡ a(mod d). In this paper we develop some tools to deal with this type of problem and apply them to show that, for example, N(x;4, 3) ≥ N(x;4, 1) for every x. In the process we express the socalled second order LandauRamanujan constant as an infinite series and show that the same type of formula holds for a much larger class of constants. 1.
An asymptotic formula for the number of smooth values of a polynomial
 J. Number Theory
, 1999
"... Integers without large prime factors, dubbed smooth numbers, are by now firmly established as a useful and versatile tool in number theory. More than being simply a property of numbers that is conceptually dual to primality, smoothness has played a major role in the proofs of many results, from mult ..."
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Cited by 11 (1 self)
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Integers without large prime factors, dubbed smooth numbers, are by now firmly established as a useful and versatile tool in number theory. More than being simply a property of numbers that is conceptually dual to primality, smoothness has played a major role in the proofs of many results, from multiplicative questions to Waring’s problem to complexity
Square free values of the order function
 MR2028173 (2004i:11116), Zbl 1066.11044
, 2003
"... Given a 0}, we consider the problem of enumerating the integers m coprime to a such that the order of a modulo m is square free. This question is raised in analogy to a result recently proved jointly with F. Saidak and I. Shparlinski where square free values of the Carmichael function are studie ..."
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Cited by 7 (0 self)
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Given a 0}, we consider the problem of enumerating the integers m coprime to a such that the order of a modulo m is square free. This question is raised in analogy to a result recently proved jointly with F. Saidak and I. Shparlinski where square free values of the Carmichael function are studied. The technique is the one of Hooley that uses the Chebotarev Density Theorem to enumerate primes for which the index i p (a) of a modulo p is divisible by a given integer. 1.
Decay of meanvalues of multiplicative functions
 Canad. J. Math
"... Given a multiplicative function f with f(n)  ≤ 1 for all n, we are concerned with obtaining explicit upper bounds on the meanvalue 1 ..."
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Cited by 7 (4 self)
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Given a multiplicative function f with f(n)  ≤ 1 for all n, we are concerned with obtaining explicit upper bounds on the meanvalue 1
An uncertainty principle for arithmetic sequences
, 2004
"... Analytic number theorists usually seek to show that sequences which appear naturally in arithmetic are “welldistributed ” in some appropriate sense. In various discrepancy problems, combinatorics researchers have analyzed limitations to equidistribution, as have Fourier analysts when working with ..."
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Cited by 6 (3 self)
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Analytic number theorists usually seek to show that sequences which appear naturally in arithmetic are “welldistributed ” in some appropriate sense. In various discrepancy problems, combinatorics researchers have analyzed limitations to equidistribution, as have Fourier analysts when working with the “uncertainty principle”. In this article we find that these ideas have a natural setting in the analysis of distributions of sequences in analytic number theory, formulating a general principle, and giving several examples.
Squarefree Values of the Carmichael Function
 J. NUM. THEORY
, 2003
"... We obtain an asymptotic formula for the number of squarefree values among p 1; for primes ppx; and we apply it to derive the following asymptotic formula for LðxÞ; the number of squarefree values of the Carmichael function lðnÞ for 1pnpx; LðxÞ ðk þ oð1ÞÞ x ln 1 a x; where a 0:37395y is the Artin ..."
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Cited by 5 (3 self)
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We obtain an asymptotic formula for the number of squarefree values among p 1; for primes ppx; and we apply it to derive the following asymptotic formula for LðxÞ; the number of squarefree values of the Carmichael function lðnÞ for 1pnpx; LðxÞ ðk þ oð1ÞÞ x ln 1 a x; where a 0:37395y is the Artin constant, and k 0:80328y is another absolute constant.