In a research paper I stumbled upon the formula $x =\overline{0 \dots 2^n-1}$. As far as I understand from the context of the paper this means that $x$ can have a value between $0$ and $2^n - 1$, but what does the overline mean?
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2Possibly that the end points are included, i.e. $x$ is allowed to be $0$ or $2^n-1$? I have never seen it before, so I have no idea. What was the research paper? – Arthur Nov 05 '18 at 09:46
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This notation was much more common 100 years ago. Back in the days before things like ${;\dots;}$ notation for sets. – GEdgar Nov 05 '18 at 12:19