Laguere EOP’s
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1: 7.20 Mathematical Applications
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§7.20(ii) Cornu’s Spiral
►Let the set be defined by , , . Then the set is called Cornu’s spiral: it is the projection of the corkscrew on the -plane. … ► …2: 31.2 Differential Equations
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§31.2(i) Heun’s Equation
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31.2.1
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Jacobi’s Elliptic Form
… ►Weierstrass’s Form
… ►§31.2(v) Heun’s Equation Automorphisms
…3: 29.2 Differential Equations
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§29.2(i) Lamé’s Equation
… ►§29.2(ii) Other Forms
… ►we have …For the Weierstrass function see §23.2(ii). … ►4: 28.2 Definitions and Basic Properties
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§28.2(i) Mathieu’s Equation
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28.2.1
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§28.2(iii) Floquet’s Theorem and the Characteristic Exponents
… ►§28.2(iv) Floquet Solutions
… ► …5: 7.2 Definitions
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§7.2(ii) Dawson’s Integral
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7.2.5
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7.2.8
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, , and are entire functions of , as are and in the next subsection.
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6: 28.20 Definitions and Basic Properties
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§28.20(i) Modified Mathieu’s Equation
►When is replaced by , (28.2.1) becomes the modified Mathieu’s equation: ►
28.20.1
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28.20.2
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►For ,
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7: 22.16 Related Functions
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§22.16(ii) Jacobi’s Epsilon Function
►Integral Representations
… ►§22.16(iii) Jacobi’s Zeta Function
►Definition
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…8: 19.2 Definitions
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►Because is a polynomial, we have
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§19.2(ii) Legendre’s Integrals
… ►Legendre’s complementary complete elliptic integrals are defined via … ►§19.2(iii) Bulirsch’s Integrals
►Bulirsch’s integrals are linear combinations of Legendre’s integrals that are chosen to facilitate computational application of Bartky’s transformation (Bartky (1938)). …9: 18.36 Miscellaneous Polynomials
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§18.36(vi) Exceptional Orthogonal Polynomials
… ►EOP’s are non-classical in that not only are certain polynomial orders missing, but, also, not all EOP polynomial zeros are within the integration range of their generating measure, and EOP-orthogonality properties do not allow development of Gaussian-type quadratures. … ►Type I -Laguerre EOP’s
… ►Type III -Hermite EOP’s
►Hermite EOP’s are defined in terms of classical Hermite OP’s. …10: 18.38 Mathematical Applications
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►Exceptional OP’s (EOP’s) are those which are ‘missing’ a finite number of lower order polynomials, but yet form complete sets with respect to suitable measures.
…Hermite EOP’s appear in solutions of a rationally modified Schrödinger equation in §18.39.
Much of the exploration of the EOP’s is based on the operator algebra as developed in SUSY, above.
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