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Vinculum (symbol)

From Simple English Wikipedia, the free encyclopedia

A vinculum is a horizontal line put over a mathematical expression. It shows that it belongs together as a group. (Vinculum is Latin for "chain".)

Examples are:

1. groups of digits repeating forever, for example,

2. fractions

3. radicals (in the following example the quantity is the radicand, and thus has a vinculum over it):

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