Orthogonal Functions (Dover Books on Advanced Mathematics) - Giovanni Sansone, G. Sansome, G. Sansone, Ainsley H. Diamond (1991) |
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Easy to read but rigorous in its attention to detail and technique, this graduate-level text covers expansion in a series of orthogonal functions and preliminary notions of Hilbert space, expansion in Fourier series and in series of Legendre polynomials and spherical harmonics, and expansions in Laguerre and Hermite series. |
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Translation of: Sviluppi in serie di funzioni ortogonali. |