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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.
If y is a variable that depends on x, then , read as "d y over d x" (commonly shortened to "d y d x"), is the derivative of y with respect to x. 2. If f is a function of a single variable x , then d f d x {\displaystyle \textstyle {\frac {\mathrm {d} f}{\mathrm {d} x}}} is the derivative of f , and d f d x ( a ) {\displaystyle \textstyle {\frac ...
unstrict inequality signs (less-than or equals to sign and greater-than or equals to sign) : 1670 (with the horizontal bar over the inequality sign, rather than below it) ...
There may be any number of beats in a measure but the most common by far are multiples of 2 or 3 (i.e., a top number of 2, 3, 4, or 6). Likewise, any note length can be used to represent a beat, but a quarter note (indicated by a bottom number of 4) or eighth note (bottom number of 8) are by far the most common.
top left corner top right corner Corner quotes, also called “Quine quotes”; for quasi-quotation, i.e. quoting specific context of unspecified (“variable”) expressions; [ 4 ] also used for denoting Gödel number ; [ 5 ] for example “⌜G⌝” denotes the Gödel number of G. (Typographical note: although the quotes appears as a “pair ...
X bar, x̄ (or X̄) or X-bar may refer to: X-bar theory, a component of linguistic theory; Arithmetic mean, a commonly used type of average; An X-bar, a rollover protection structure; Roman numeral 10,000 in vinculum form
In "old style" text figures, numerals 0, 1 and 2 are x-height; numerals 6 and 8 have bowls within x-height, plus ascenders; numerals 3, 5, 7 and 9 have descenders from x-height, with 3 resembling ʒ; and the numeral 4 extends a short distance both up and down from x-height. Old-style numerals are often used by British presses.