I'm struggling to interpret the notation for this integral and can't find a direct definition for it. $\int_{(1/\mathcal{L})}f(s)ds$. Here, $\mathcal{L}:=log(x)$ for a large $x\in\mathbb{N}$. What does this path mean? Is it the parametrization $t\rightarrow 1/\mathcal{L}+it$ for $t\in\mathbb{R}$? The complex circle centre zero radius $1/\mathcal{L}$? (The paper is Zhang's Bounded Gaps Between Primes, lemma 2, if that's relevant).
2026-04-07 19:25:39.1775589939
Complex integration path notation
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