separable%20Gauss%20sum
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1: 27.10 Periodic Number-Theoretic Functions
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►Another generalization of Ramanujan’s sum is the Gauss sum
associated with a Dirichlet character .
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is separable for some if
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►For any Dirichlet character , is separable for if , and is separable for every if and only if whenever .
For a primitive character , is separable for every , and
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►Conversely, if is separable for every , then is primitive (mod ).
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2: 20 Theta Functions
Chapter 20 Theta Functions
…3: Bibliography K
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The group , separation of variables and the hydrogen atom.
SIAM J. Appl. Math. 30 (4), pp. 630–664.
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Separation of Variables for Riemannian Spaces of Constant Curvature.
Longman Scientific & Technical, Harlow.
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Algorithm 737: INTLIB: A portable Fortran 77 interval standard-function library.
ACM Trans. Math. Software 20 (4), pp. 447–459.
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Methods of computing the Riemann zeta-function and some generalizations of it.
USSR Comput. Math. and Math. Phys. 20 (6), pp. 212–230.
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HYP and HYPQ. Mathematica packages for the manipulation of binomial sums and hypergeometric series respectively -binomial sums and basic hypergeometric series.
Séminaire Lotharingien de Combinatoire 30, pp. 61–76.
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4: 15.20 Software
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►References to research software that is available in other ways is listed separately.
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5: Bibliography M
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Rational approximations, software and test methods for sine and cosine integrals.
Numer. Algorithms 12 (3-4), pp. 259–272.
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Calculation of the modified Bessel functions of the second kind with complex argument.
Math. Comp. 20 (95), pp. 407–412.
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Lie theory and separation of variables. I: Parabolic cylinder coordinates.
SIAM J. Math. Anal. 5 (4), pp. 626–643.
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Symmetry and Separation of Variables.
Addison-Wesley Publishing Co., Reading, MA-London-Amsterdam.
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The -analogue of the Laguerre polynomials.
J. Math. Anal. Appl. 81 (1), pp. 20–47.
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6: 10.73 Physical Applications
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►and on separation of variables we obtain solutions of the form , from which a solution satisfying prescribed boundary conditions may be constructed.
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►See Krivoshlykov (1994, Chapter 2, §2.2.10; Chapter 5, §5.2.2), Kapany and Burke (1972, Chapters 4–6; Chapter 7, §A.1), and Slater (1942, Chapter 4, §§20, 25).
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►On separation of variables into cylindrical coordinates, the Bessel functions , and modified Bessel functions and , all appear.
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►The functions , , , and arise in the solution (again by separation of variables) of the Helmholtz equation in spherical coordinates (§1.5(ii)):
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7: 26.10 Integer Partitions: Other Restrictions
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►If more than one restriction applies, then the restrictions are separated by commas, for example, .
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►where the last right-hand side is the sum over of the generating functions for partitions into distinct parts with largest part equal to .
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►where the inner sum is the sum of all positive odd divisors of .
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►where the sum is over nonnegative integer values of for which .
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►where the inner sum is the sum of all positive divisors of that are in .
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8: Bibliography N
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On an integral transform involving a class of Mathieu functions.
SIAM J. Math. Anal. 20 (6), pp. 1500–1513.
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Reduction and evaluation of elliptic integrals.
Math. Comp. 20 (94), pp. 223–231.
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A table of integrals of the error functions.
J. Res. Nat. Bur. Standards Sect B. 73B, pp. 1–20.
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A separating surface for the Painlevé differential equation
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J. Math. Anal. Appl. 193 (3), pp. 817–831.
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9: 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.
…It can be expressed as a sum over all primes :
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►Gauss and Legendre conjectured that is asymptotic to as :
…(See Gauss (1863, Band II, pp. 437–477) and Legendre (1808, p. 394).)
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►the sum of the th powers of the positive integers that are relatively prime to .
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