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A vinculum (from Latin vinculum 'fetter, chain, tie') is a horizontal line used in mathematical notation for various purposes. It may be placed as an overline or underline above or below a mathematical expression to group the expression's elements.
An overline, overscore, or overbar, is a typographical feature of a horizontal line drawn immediately above the text. In old mathematical notation, an overline was called a vinculum, a notation for grouping symbols which is expressed in modern notation by parentheses, though it persists for symbols under a radical sign.
In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics.
For most symbols, the entry name is the corresponding Unicode symbol. So, for searching the entry of a symbol, it suffices to type or copy the Unicode symbol into the search textbox. Similarly, when possible, the entry name of a symbol is also an anchor, which allows linking easily from another Wikipedia article. When an entry name contains ...
OVERLINE U+203E: Po, other Common ⁁ CARET INSERTION POINT U+2041: Po, other Common ⁂ ASTERISM U+2042: Po, other Common ⁃ HYPHEN BULLET U+2043: Po, other Common ⁇ DOUBLE QUESTION MARK U+2047: Po, other Common ⁈ QUESTION EXCLAMATION MARK U+2048: Po, other Common ⁉ EXCLAMATION QUESTION MARK U+2049: Po, other Common ⁊ TIRONIAN SIGN ET ...
The Symbol font displays the character without any vinculum whatsoever; the overline may be a separate character at 0x60. [13] The JIS, [ 14 ] Wansung [ 15 ] and CNS 11643 [ 11 ] [ 16 ] code charts include a short overline attached to the radical symbol, whereas the GB 2312 [ 17 ] and GB 18030 charts do not.
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This template applies an overline. Useful for displaying repeating fractions, like 1/3. Template parameters [Edit template data] Parameter Description Type Status First parameter 1 Overlined text (if 2 empty); or initial nonrepeating digits (if not) Example 142857 Number required Second parameter 2 Digits to be overlined Example 142857 Number optional See also {{ Overarc }} {{ Underline ...