number-theoretic%20significance
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1: 27.20 Methods of Computation: Other Number-Theoretic Functions
§27.20 Methods of Computation: Other Number-Theoretic Functions
…2: 27.17 Other Applications
§27.17 Other Applications
►Reed et al. (1990, pp. 458–470) describes a number-theoretic approach to Fourier analysis (called the arithmetic Fourier transform) that uses the Möbius inversion (27.5.7) to increase efficiency in computing coefficients of Fourier series. …3: 6.16 Mathematical Applications
4: 27.5 Inversion Formulas
§27.5 Inversion Formulas
… ►The set of all number-theoretic functions with forms an abelian group under Dirichlet multiplication, with the function in (27.2.5) as identity element; see Apostol (1976, p. 129). …Generating functions yield many relations connecting number-theoretic functions. … ►
27.5.2
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5: 27.8 Dirichlet Characters
§27.8 Dirichlet Characters
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27.8.4
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►If , then the characters satisfy the orthogonality relation
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27.8.6
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►A divisor of is called an induced modulus for if
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6: 27.10 Periodic Number-Theoretic Functions
§27.10 Periodic Number-Theoretic Functions
►If is a fixed positive integer, then a number-theoretic function is periodic (mod ) if … ►
27.10.3
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27.10.12
7: 27.21 Tables
§27.21 Tables
…8: 27.2 Functions
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►Euclid’s Elements (Euclid (1908, Book IX, Proposition 20)) gives an elegant proof that there are infinitely many primes.
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►Other examples of number-theoretic functions treated in this chapter are as follows.
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27.2.9
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