Latin word meaning

*link*or*chain*. In general, when writing a numerical expression of mathematics, the vinculum is a sign used in various contexts to graphically relate symbols (digits or letters) that must be considered to form a whole.### Examples

- Period of a fraction: \(0.\overline {142857}\)
- Radicand of a radical: \(3\sqrt{742} + 3\)
- Notation of a segment with endpoints A and B: \(\overline {\textrm{AB}}\)
- Rational expression: \(\dfrac {3x^{2}} {5x^{2}+2x-1}\)