over infinite intervals
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11—18 of 18 matching pages
11: 1.4 Calculus of One Variable
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►If exists and is continuous on an interval
, then we write .
…When is unbounded, is infinitely differentiable on and we write .
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Infinite Integrals
… ►With , the total variation of on a finite or infinite interval is …where the supremum is over all sets of points in the closure of , that is, with added when they are finite. …12: Bibliography I
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IEEE Standard for Interval Arithmetic: IEEE Std 1788-2015.
The Institute of Electrical and Electronics Engineers, Inc..
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IEEE Standard for Interval Arithmetic: IEEE Std 1788.1-2017.
The Institute of Electrical and Electronics Engineers, Inc..
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The eigenvalue problem for infinite compact complex symmetric matrices with application to the numerical computation of complex zeros of and of Bessel functions of any real order
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Linear Algebra Appl. 194, pp. 35–70.
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Computation of integrals over the half-line involving products of Bessel functions, with application to microwave transmission lines.
Z. Angew. Math. Mech. 75 (12), pp. 917–926.
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13: 2.1 Definitions and Elementary Properties
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►In those cases it is usually necessary to interpret each infinite series separately in the manner described above; that is, it is not always possible to reinterpret the asymptotic approximation as a single asymptotic expansion.
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►If the set in §2.1(iii) is a closed sector , then by definition the asymptotic property (2.1.13) holds uniformly with respect to as .
…Suppose is a parameter (or set of parameters) ranging over a point set (or sets) , and for each nonnegative integer
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►where is a finite, or infinite, limit point of .
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►Many properties enjoyed by Poincaré expansions (for example, multiplication) do not always carry over.
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14: 1.5 Calculus of Two or More Variables
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Infinite Integrals
►Suppose that are finite, is finite or , and , are continuous on the partly-closed rectangle or infinite strip . … ►Then the double integral of over is defined by … ►Infinite Double Integrals
… ►Moreover, if are finite or infinite constants and is piecewise continuous on the set , then …15: 2.4 Contour Integrals
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►The result in §2.3(ii) carries over to a complex parameter .
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►is seen to converge absolutely at each limit, and be independent of .
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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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(b)
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(c)
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ranges along a ray or over an annular sector , , where , , and . converges at absolutely and uniformly with respect to .
Excluding , is positive when , and is bounded away from zero uniformly with respect to as along .
16: 1.8 Fourier Series
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►For piecewise continuous on and real ,
…(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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►If a function is periodic, with period , then the series obtained by differentiating the Fourier series for term by term converges at every point to .
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►Suppose that is twice continuously differentiable and and are integrable over
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►Suppose that is continuous and of bounded variation on .
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17: 2.10 Sums and Sequences
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►Assume that , and are integers such that , , and is absolutely integrable over
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… being some number in the interval
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(c)
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►the last step following from when is on the interval
, the imaginary axis, or the small semicircle.
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►Let be a constant in and denote the Legendre polynomial of degree .
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The first infinite integral in (2.10.2) converges.
18: 2.5 Mellin Transform Methods
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►Let be a locally integrable function on , that is, exists for all and satisfying .
…The domain of analyticity of is usually an infinite strip parallel to the imaginary axis.
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►The 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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►Let and be locally integrable on and
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