Part of the Undergraduate Lecture Notes in Physics book series (ULNP)
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In Sect. I.7.2 of the first book we investigated in detail how an arbitrary function f(x) can be expanded into a functional series in terms of functions a n (x) with n = 0, 1, 2, …, i.e.
KeywordsFourier Series Fourier Coefficient Lattice Vector Fourier Expansion Reciprocal Lattice
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