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Creators/Authors contains: "Ramos, Antonio Pedro"

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  1. ; ; (, Mathematics of Computation)
    Assuming the Riemann hypothesis, we improve the current upper and lower bounds for the average value of Montgomery’s function F(a,T) over long intervals by means of a Fourier optimization framework. The function F(a,T) is often used to study the pair correlation of the non-trivial zeros of the Riemann zeta-function. Two ideas play a central role in our approach: (i) the introduction of new averaging mechanisms in our conceptual framework and (ii) the full use of the class of test functions introduced by Cohn and Elkies for the sphere packing bounds, going beyond the usual class of bandlimited functions. We conclude that such an average value, that is conjectured to be 1, lies between 0.9303 and 1.3208. Our Fourier optimization framework also yields an improvement on the current bounds for the analogous problem concerning the non-trivial zeros in the family of Dirichlet L-functions. 
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    Free, publicly-accessible full text available January 1, 2026