A univariate quadratic function has the form f(x) = ax^2 + bx + c, where a, b and c are constants, and a is non-zero. The roots of a quadratic function can be found by finding values of x that satisfy ...
In this paper we bound character sums of the shape ∑ n≤N χ 1 f n χ 2 f n+l , ; where χ1 and χ2 are non-principal multiplicative characters modulo a prime p, f(x) is a real-valued, twice-differentiable ...
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