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Division sign. The division sign (÷) is a mathematical symbol consisting of a short horizontal line with a dot above and another dot below, used in Anglophone countries to indicate the operation of division. This usage, though widespread in some countries, is not universal and the symbol has a different meaning in other countries.
This division sign is also used alone to represent the division operation itself, as for instance as a label on a key of a calculator. The obelus was introduced by Swiss mathematician Johann Rahn in 1659 in Teutsche Algebra. [10]: 211 The ÷ symbol is used to indicate subtraction in some European countries, so its use may be misunderstood. [11]
The signs shown below were used as vehicle signs and worn on uniform (except where noted). The short-lived 7th Infantry Division did not have a formation sign and that for the 66th Division was designed but never used. Those for the 12th and 23rd divisions were worn by a small number of troops left behind in Britain.
Glossary of mathematical symbols. A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various ...
Order of operations. In mathematics and computer programming, the order of operations is a collection of rules that reflect conventions about which operations to perform first in order to evaluate a given mathematical expression. These rules are formalized with a ranking of the operations. The rank of an operation is called its precedence, and ...
Division insignia of the United States Army. Shoulder sleeve insignia (SSI) are cloth emblems worn on the shoulders of US Army uniforms to identify the primary headquarters to which a soldier is assigned. The SSI of some army divisions have become known in popular culture. [1][2][3]
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An obelus (plural: obeluses or obeli) is a term in codicology and latterly in typography that refers to a historical annotation mark which has resolved to three modern meanings: Division sign ÷. Dagger †. Commercial minus sign ⁒ (limited geographical area of use)