quadratic transformations
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1: 15.17 Mathematical Applications
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►The logarithmic derivatives of some hypergeometric functions for which quadratic transformations exist (§15.8(iii)) are solutions of Painlevé equations.
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►Quadratic transformations give insight into the relation of elliptic integrals to the arithmetic-geometric mean (§19.22(ii)).
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2: 15.8 Transformations of Variable
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Table 15.8.1: Quadratic transformations of the hypergeometric function.
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§15.8(iii) Quadratic Transformations
… ►Group 1 | Group 2 | Group 3 | Group 4 |
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§15.8(iv) Quadratic Transformations (Continued)
… ►This is a quadratic transformation between two cases in Group 1. … ►which is a quadratic transformation between two cases in Group 3. …3: 18.7 Interrelations and Limit Relations
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§18.7(ii) Quadratic Transformations
…4: 19.8 Quadratic Transformations
§19.8 Quadratic Transformations
…5: 19.36 Methods of Computation
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§19.36(ii) Quadratic Transformations
►Complete cases of Legendre’s integrals and symmetric integrals can be computed with quadratic convergence by the AGM method (including Bartky transformations), using the equations in §19.8(i) and §19.22(ii), respectively. ►The incomplete integrals and can be computed by successive transformations in which two of the three variables converge quadratically to a common value and the integrals reduce to , accompanied by two quadratically convergent series in the case of ; compare Carlson (1965, §§5,6). … ►Computation of Legendre’s integrals of all three kinds by quadratic transformation is described by Cazenave (1969, pp. 128–159, 208–230). ►Quadratic transformations can be applied to compute Bulirsch’s integrals (§19.2(iii)). …6: 32.7 Bäcklund Transformations
7: 16.6 Transformations of Variable
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Quadratic
…8: 18.2 General Orthogonal Polynomials
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