The phrase "at a division between" is correct and usable in written English.
It can be used to describe a specific point or location where two things separate or differ.
Example: "The negotiations reached a critical point at a division between the two parties' interests."
Alternatives: "at a crossroads between" or "at a boundary between".
But the absence of Silicon Valley's most senior figures hints at a deep division between it and Washington.
Though some traditionalists would be certain to balk at an explicit division between marriage and civil union, a majority of Americans already agree that gay couples should be allowed to join in secular unions with the rights and responsibilities that generally accompany marriage.
During the 1790s, when Usman seems to have lived continuously at Degel, a division developed between his substantial community and the Gobir ruling dynasty.
Because the automated settings in LMA were often unable to correctly determine the division between the two portions of the call, it was necessary to use an interactive macro that required the user to place a cursor at the division between the two parts of the call.
At that time, there was a sharp division between political radicals led by Mao's widow, Jiang Qing, and moderates, led by Mr. Deng.
At the time there was a sharp division between the contention of the Anglo-Saxons that the UN had been weakened by its refusal to act, and the view of nearly everyone else that it had been weakened by its failure to prevent America and Britain from acting alone.
There is little linkage disequilibrium between the two halves, and the genes KIR3DP1 and KIR2DL4 are at the division between centromeric and telomeric sections.
If we are going to go back to CSEs and O-levels and less of an emphasis on coursework and purely linear exams, a division at 14 between the academic and the non-academic, we are going to have revisit that.
Consistent with our differential expression analyses, samples from 0 months were most distinct from other ages, with a gross division between modules enriched at early versus late ages (Fig. 3A).
Pagans believed that at Samhain the division between this world and the otherworld was at its thinnest, allowing spirits to pass through.
