Ramanujan’s
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1: 27.20 Methods of Computation: Other Number-Theoretic Functions
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►A recursion formula obtained by differentiating (27.14.18) can be used to calculate Ramanujan’s function , and the values can be checked by the congruence (27.14.20).
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2: 20.11 Generalizations and Analogs
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§20.11(ii) Ramanujan’s Theta Function and -Series
►Ramanujan’s theta function is defined by … ►§20.11(iii) Ramanujan’s Change of Base
… ►These results are called Ramanujan’s changes of base. …3: George E. Andrews
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►He has a long-term interest in the work of S.
Ramanujan, whose last notebook he unearthed in 1976.
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4: 27.10 Periodic Number-Theoretic Functions
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►An example is Ramanujan’s sum:
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27.10.4
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27.10.5
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27.10.8
►Another generalization of Ramanujan’s sum is the Gauss sum
associated with a Dirichlet character .
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5: 27.14 Unrestricted Partitions
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§27.14(v) Divisibility Properties
… ►For example, the Ramanujan identity … ►§27.14(vi) Ramanujan’s Tau Function
… ►The 24th power of in (27.14.12) with is an infinite product that generates a power series in with integer coefficients called Ramanujan’s tau function : … ►6: 20.12 Mathematical Applications
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►For applications of Jacobi’s triple product (20.5.9) to Ramanujan’s
function and Euler’s pentagonal numbers see Hardy and Wright (1979, pp. 132–160) and McKean and Moll (1999, pp. 143–145).
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7: 5.13 Integrals
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Ramanujan’s Beta Integral
…8: 17.13 Integrals
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Ramanujan’s Integrals
…9: 17.8 Special Cases of Functions
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