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21—30 of 252 matching pages
21: Bibliography Y
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Simple Variational Proof That Any Two-Dimensional Potential Well Supports at Least One Bound State.
American Journal of Physics 57 (1), pp. 85–86.
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22: 1.16 Distributions
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§1.16(i) Test Functions
… ►The closure of the set of points where is called the support of . If the support of is a compact set (§1.9(vii)), then is called a function of compact support. A test function is an infinitely differentiable function of compact support. …23: Bibliography M
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The supports of measures associated with orthogonal polynomials and the spectra of the related selfadjoint operators.
Rocky Mountain J. Math. 21 (1), pp. 501–527.
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Methods and Programs for Mathematical Functions.
Ellis Horwood Ltd., Chichester.
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24: 18.2 General Orthogonal Polynomials
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►The moments for an orthogonality measure are the numbers
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►are the Christoffel numbers, see also (3.5.18).
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►Nevai (1979, p.39) defined the class of orthogonality measures with support inside such that the absolutely continuous part has in the Szegő class .
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►If then the interval is included in the support of , and outside the measure only has discrete mass points such that are the only possible limit points of the sequence , see Máté et al. (1991, Theorem 10).
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►for in the support of the orthogonality measure and such that the series in (18.2.41) converges absolutely for all these .
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25: Bibliography K
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Numerical Methods and Software.
Prentice Hall, Englewood Cliffs, N.J..
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Poly-Bernoulli numbers.
J. Théor. Nombres Bordeaux 9 (1), pp. 221–228.
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On formulas involving both the Bernoulli and Fibonacci numbers.
Scripta Math. 23, pp. 27–35.
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Remark on -adic -Bernoulli numbers.
Adv. Stud. Contemp. Math. (Pusan) 1, pp. 127–136.
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Algorithm 910: a portable C++ multiple-precision system for special-function calculations.
ACM Trans. Math. Software 37 (4), pp. Art. 45, 27.
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26: 18.33 Polynomials Orthogonal on the Unit Circle
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►Let be a probability measure on the unit circle of which the support is an infinite set.
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►This states that for any sequence with and the polynomials generated by the recurrence relations (18.33.23), (18.33.24) with satisfy the orthogonality relation (18.33.17) for a unique probability measure with infinite support on the unit circle.
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27: 1.18 Linear Second Order Differential Operators and Eigenfunction Expansions
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►Conversely, if complex numbers
satisfy (1.18.5) then there is a unique such that (1.18.3) holds and can be given by
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►For we can take , with appropriate boundary conditions, and with compact support if is bounded, which space is dense in , and for unbounded require that possible non- eigenfunctions of (1.18.28), with real eigenvalues, are non-zero but bounded on open intervals, including .
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►The number, , of discrete states depends on the nature of , as well as , and, again, must vanish as , corresponding to the traditionally assumed start of the energy continuum at .
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28: Errata
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►This release increments the minor version number and contains considerable additions of new material and clarifications.
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Native MathML
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►This release increments the minor version number and contains considerable additions of new material and clarifications.
These additions were facilitated by an extension of the scheme for reference numbers; with “_” introducing intermediate numbers.
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Usability
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DLMF now uses browser-native MathML rendering for mathematics, by default, in all browsers which support MathML. See About MathML for more details and for other options.
In many cases, the links from mathematical symbols to their definitions were corrected or improved. These links were also enhanced with ‘tooltip’ feedback, where supported by the user’s browser.
29: Preface
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►The new DLMF (Digital Library of Mathematical Functions) will appear in a hardcover edition and as a free electronic publication on the World Wide Web.
The authors will review the relevant published literature and produce approximately twice the number of formulas that were contained in the original Handbook.
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30: 31.14 General Fuchsian Equation
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►The general second-order Fuchsian equation with regular singularities at , , and at , is given by
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31.14.1
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►The three sets of parameters comprise the singularity parameters
, the exponent parameters
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free accessory parameters
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With and the total number of free parameters is .
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31.14.3
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