Dot (diacritic)

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◌̇  ◌̣
Dot
  • U+0307 ◌̇ COMBINING DOT ABOVE
  • U+0323 ◌̣ COMBINING DOT BELOW

When used as a diacritic mark, the term dot refers to the glyphs "combining dot above" (◌̇), and "combining dot below" (◌̣) which may be combined with some letters of the extended Latin alphabets in use in a variety of languages. Similar marks are used with other scripts.

Overdot

Language scripts or transcription schemes that use the dot above a letter as a diacritical mark:

In mathematics and physics, when using Newton's notation the dot denotes the time derivative as in v = x ˙ {\displaystyle v={\dot {x}}} . In addition, the overdot is one way used to indicate an infinitely repeating set of numbers in decimal notation, as in 0. 3 ˙ {\displaystyle 0.{\dot {3}}} , which is equal to the fraction 1⁄3, and 0. 1 ˙ 4 ˙ 2 ˙ 8 ˙ 5 ˙ 7 ˙ {\displaystyle 0.{\dot {1}}{\dot {4}}{\dot {2}}{\dot {8}}{\dot {5}}{\dot {7}}} or 0. 1 ˙ 4285 7 ˙ {\displaystyle 0.{\dot {1}}4285{\dot {7}}} , which is equal to 1⁄7.

Underdot

Raised dot and middle dot

Letters with dot

Encoding

In Unicode, the dot is encoded at:

and at:

There is also:

Pre-composed characters:

See also

References

  1. ^ a b c United Nations Group of Experts on Geographical Names (2007). Technical reference manual for the standardization of geographical names (PDF). New York: United Nations. p. 169. ISBN 978-92-1-161500-5.

External links