as eigenvalues of q-difference operator
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11: 18.38 Mathematical Applications
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►A further operator, the so-called Casimir operator
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Dunkl Type Operators and Nonsymmetric Orthogonal Polynomials
… ►Eigenvalue equations involving Dunkl type operators have as eigenfunctions nonsymmetric analogues of multivariable special functions associated with root systems. … ►In the one-variable case the Dunkl operator eigenvalue equation … …12: 29.3 Definitions and Basic Properties
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§29.3(i) Eigenvalues
… ►§29.3(ii) Distribution
►The eigenvalues interlace according to …The eigenvalues coalesce according to … ►§29.3(vii) Power Series
…13: 18.39 Applications in the Physical Sciences
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►The nature of, and notations and common vocabulary for, the eigenvalues and eigenfunctions of self-adjoint second order differential operators is overviewed in §1.18.
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►and the corresponding eigenvalues are
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►with eigenvalues
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►The radial operator (18.39.28)
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►The Schrödinger operator essential singularity, seen in the accumulation of discrete eigenvalues for the attractive Coulomb problem, is mirrored in the accumulation of jumps in the discrete Pollaczek–Stieltjes measure as .
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14: 28.15 Expansions for Small
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§28.15(i) Eigenvalues
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28.15.1
►Higher coefficients can be found by equating powers of in the following continued-fraction equation, with :
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28.15.2
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15: 29.22 Software
16: 29.16 Asymptotic Expansions
§29.16 Asymptotic Expansions
►Hargrave and Sleeman (1977) give asymptotic approximations for Lamé polynomials and their eigenvalues, including error bounds. …17: 31.13 Asymptotic Approximations
§31.13 Asymptotic Approximations
►For asymptotic approximations for the accessory parameter eigenvalues , see Fedoryuk (1991) and Slavyanov (1996). …18: 28.16 Asymptotic Expansions for Large
19: 28.2 Definitions and Basic Properties
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