Strong Twin Prime Conjecture/Historical Note

Historical Note on Strong Twin Prime Conjecture
The Strong Twin Prime Conjecture was proposed by and  in $1923$, as a special case of the First Hardy-Littlewood Conjecture.

and present this as:


 * Un argument probabiliste montre que, s'il existe une infinité de nombres premiers jumeaux, alors de nombre de ceux qui sont situés dans l'intervalle $\sqbrk {x, x + a}$ est de l'ordre de $C \cdot \dfrac a {\paren {\Log x}^2}$ avec $C = 1,32 \ldots$

In English:
 * A probabilistic argument shows that, if there exists an infinite number of twin primes, then the number of those which are situated in the interval $\closedint x {x + a}$ is of the order of $C \cdot \dfrac a {\paren {\Log x}^2}$ where $C = 1,32 \ldots$

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