
| Preface ⅠIntroduction 1.Basic Principles and Facts 2.Gegenbauer Polynomials ⅡApproximation means 3.Multivariate Polynomials 4.Polynomials on Sphere and Ball Ⅲ Multivariate approximation 5.Approximation Methods 6.Approximation on the Sphere 7.Approximation on the Ball Ⅳ Application 8.Tomography Appendices A Legendre basis B zeros of the kernel function C Newman-shapiro operators D Reconstruction E solutions Bibliography Index |
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