In this section, we will study the spherical harmonics as an example for a complete orthonormal system in L2(Ω). This system and its theory are well established; see, for example, [66, 75, 91, 94, 139].
CITATION STYLE
Michel, V. (2013). Fourier analysis. In Applied and Numerical Harmonic Analysis (pp. 97–143). Springer International Publishing. https://doi.org/10.1007/978-0-8176-8403-7_5
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