finite sum
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11—20 of 75 matching pages
11: 34.5 Basic Properties: Symbol
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►Examples are provided by:
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12: 18.30 Associated OP’s
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►For other cases there may also be, in addition to a possible integral as in (18.30.10), a finite sum of discrete weights on the negative real -axis each multiplied by the polynomial product evaluated at the corresponding values of , as in (18.2.3).
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13: 18.2 General Orthogonal Polynomials
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►A system of OP’s satisfying (18.2.1) and (18.2.5) is complete if each in the Hilbert space can be approximated in Hilbert norm by finite sums
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14: 18.18 Sums
15: 25.11 Hurwitz Zeta Function
16: Errata
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Equation (25.15.6)
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Equation (25.15.10)
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25.15.6
The upper-index of the finite sum which originally was , was replaced with since .
Reported by Gergő Nemes on 2021-08-23
25.15.10
The upper-index of the finite sum which originally was , was replaced with since .
Reported by Gergő Nemes on 2021-08-23
17: 18.17 Integrals
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►provided that is even and the sum of any two of is not less than the third; otherwise the integral is zero.
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►provided that is even and the sum of any two of is not less than the third; otherwise the integral is zero.
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18: 2.1 Definitions and Elementary Properties
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►If is a finite limit point of , then
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►For (2.1.14) can be the positive real axis or any unbounded sector in of finite angle.
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►Similarly for finite limit point in place of .
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►where is a finite, or infinite, limit point of .
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►It can even happen that a generalized asymptotic expansion converges, but its sum is not the function being represented asymptotically; for an example see §18.15(iii).
19: 31.14 General Fuchsian Equation
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►The exponents at the finite singularities are and those at are , where
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►An algorithm given in Kovacic (1986) determines if a given (not necessarily Fuchsian) second-order homogeneous linear differential equation with rational coefficients has solutions expressible in finite terms (Liouvillean solutions).
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20: 1.8 Fourier Series
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1.8.3
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►(1.8.10) continues to apply if either or or both are infinite and/or has finitely many singularities in , provided that the integral converges uniformly (§1.5(iv)) at , and the singularities for all sufficiently large .
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►Let be an absolutely integrable function of period , and continuous except at a finite number of points in any bounded interval.
Then the series (1.8.1) converges to the sum
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1.8.15
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