finite sum of 6j symbols
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11: 18.38 Mathematical Applications
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and Symbols
… ► ►The symbol (34.4.3), with an alternative expression as a terminating balanced of unit argument, can be expressend in terms of Racah polynomials (18.26.3). The orthogonality relations (34.5.14) for the symbols can be rewritten in terms of orthogonality relations for Racah polynomials as given by (18.25.9)–(18.25.12). … …12: 24.4 Basic Properties
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§24.4(iii) Sums of Powers
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24.4.11
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§24.4(iv) Finite Expansions
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24.4.19
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§24.4(viii) Symbolic Operations
…13: 2.4 Contour Integrals
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►If, in addition, the corresponding integrals with and replaced by their derivatives and , , converge uniformly, then by repeated integrations by parts
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►in which is finite, is finite or infinite, and is the angle of slope of at , that is, as along .
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(a)
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►with and chosen so that the zeros of correspond to the zeros , say, of the quadratic .
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►For a symbolic method for evaluating the coefficients in the asymptotic expansions see Vidūnas and Temme (2002).
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In a neighborhood of
2.4.11
with , , , and the branches of and continuous and constructed with as along .