Hi. I've been trying to find some material about Fourier Series in 2-D, along with 2-D Orthogonal Systems, but i haven't been able to find any about the former in any of the books i have (Toslov and Butkov's Mathematical Physics) nor online (nothing on mathworld?). Any input would be appreciated.(adsbygoogle = window.adsbygoogle || []).push({});

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# Fourier Series in 2-3D

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