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1: 34.6 Definition: Symbol
§34.6 Definition: Symbol
βΊThe symbol may be defined either in terms of symbols or equivalently in terms of symbols: βΊ
34.6.1
βΊ
34.6.2
βΊThe symbol may also be written as a finite triple sum equivalent to a terminating generalized hypergeometric series of three variables with unit arguments.
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2: 26.10 Integer Partitions: Other Restrictions
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βΊ
denotes the number of partitions of into distinct parts.
denotes the number of partitions of into at most distinct parts.
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βΊ
Table 26.10.1: Partitions restricted by difference conditions, or equivalently with parts from .
βΊ
βΊ
βΊ
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βΊNote that , with strict inequality for .
It is known that for , , with strict inequality for sufficiently large, provided that , or ; see Yee (2004).
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3: 26.6 Other Lattice Path Numbers
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βΊ
Delannoy Number
βΊ is the number of paths from to that are composed of directed line segments of the form , , or . … βΊ … βΊ … βΊ …4: 1.11 Zeros of Polynomials
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βΊSet to reduce to , with , .
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βΊ
, , , .
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βΊResolvent cubic is with roots , , , and , , .
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βΊLet
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βΊThen , with , is stable iff ; , ; , .
5: 3.3 Interpolation
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βΊIf is analytic in a simply-connected domain (§1.13(i)), then for ,
…where is a simple closed contour in described in the positive rotational sense and enclosing the points .
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βΊIf is analytic in a simply-connected domain , then for ,
…where is given by (3.3.3), and is a simple closed contour in described in the positive rotational sense and enclosing .
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βΊThen by using in Newton’s interpolation formula, evaluating and recomputing , another application of Newton’s rule with starting value gives the approximation , with 8 correct digits.
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6: 21.5 Modular Transformations
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βΊLet , , , and be matrices with integer elements such that
βΊ
21.5.1
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βΊHere is an eighth root of unity, that is, .
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βΊ( invertible with integer elements.)
…For a matrix we define , as a column vector with the diagonal entries as elements.
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7: 27.2 Functions
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βΊIt is the special case of the function that counts the number of ways of expressing as the product of factors, with the order of factors taken into account.
…Note that .
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βΊTable 27.2.2 tabulates the Euler totient function , the divisor function (), and the sum of the divisors (), for .
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βΊ