Linear Recurrences and Asymptotic Behavior of Exponential Sums of Symmetric Boolean Functions

by Francis N. Castro and Luis A. Medina

Elec. J. Combinatorics, 18(2) (2011), #P8.


In this paper we give an improvement of the degree of the homogeneous linear recurrence with integer coefficients that exponential sums of symmetric Boolean functions satisfy. This improvement is tight. We also compute the asymptotic behavior of symmetric Boolean functions and provide a formula that allows us to determine if a symmetric Boolean function is asymptotically not balanced. In particular, when the degree of the symmetric function is a power of two, then the exponential sum is much smaller than \(2^n\).

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