poles
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31—40 of 60 matching pages
31: 25.15 Dirichlet -functions
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βΊFor the principal character , is analytic everywhere except for a simple pole at with residue , where is Euler’s totient function (§27.2).
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32: 2.5 Mellin Transform Methods
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βΊThe sum in (2.5.6) is taken over all poles of in the strip , and it provides the asymptotic expansion of for small values of .
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βΊIn the half-plane , the product has a pole of order two at each positive integer, and
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βΊFurthermore, can be continued analytically to a meromorphic function on the entire -plane, whose singularities are simple poles at , , with principal part
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βΊSimilarly, if in (2.5.18), then can be continued analytically to a meromorphic function on the entire -plane with simple poles at , , with principal part
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βΊSimilarly, since can be continued analytically to a meromorphic function (when ) or to an entire function (when ), we can choose so that has no poles in .
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33: 2.4 Contour Integrals
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βΊFor a coalescing saddle point and a pole see Wong (1989, Chapter 7) and van der Waerden (1951); in this case the uniform approximants are complementary error functions.
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βΊFor a coalescing saddle point, a pole, and a branch point see Ciarkowski (1989).
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34: 10.32 Integral Representations
35: 15.6 Integral Representations
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βΊIn (15.6.6) the integration contour separates the poles of and from those of , and has its principal value.
βΊIn (15.6.7) the integration contour separates the poles of and from those of and , and has its principal value.
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36: 8.2 Definitions and Basic Properties
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βΊWhen , is an entire function of , and is meromorphic with simple poles at , , with residue .
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37: 11.5 Integral Representations
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βΊIn (11.5.8) and (11.5.9) the path of integration separates the poles of the integrand at from those at .
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38: 14.19 Toroidal (or Ring) Functions
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βΊ
14.19.2
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39: 15.2 Definitions and Analytical Properties
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βΊThe same properties hold for , except that as a function of , in general has poles at .
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40: 16.5 Integral Representations and Integrals
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βΊwhere the contour of integration separates the poles of , , from those of .
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