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The intended use [2] when these characters were added to Unicode was to produce true superscripts and subscripts so that chemical and algebraic formulas could be written without markup. Thus "H₂O" (using a subscript 2 character) is supposed to be identical to "H 2 O" (with subscript markup).
Freytag, Asmus (2000-09-15), On the requirements for alphanumeric fonts for mathematical use: L2/01-050: N2253: Umamaheswaran, V. S. (2001-01-21), "8.1 Disposition of ballot comments on FCD 10646-2", Minutes of the SC2/WG2 meeting in Athens, September 2000: L2/02-366: Pantelia, Maria (2002-11-07), Proposal to encode two Letterlike Symbols in ...
(Holding the mouse pointer on the hyperlink will pop up a summary of the symbol's function.); The third gives symbols listed elsewhere in the table that are similar to it in meaning or appearance, or that may be confused with it; The fourth (if present) links to the related article(s) or adds a clarification note.
1698 (perhaps deriving from a much earlier use of middle dot to separate juxtaposed numbers) division slash (a.k.a. solidus ) 1718 (deriving from horizontal fraction bar, invented by Abu Bakr al-Hassar in the 12th century)
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 ...
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without (usually written with a bar on top of the s) sing. singulorum: of each SL, s.l. sub lingua: sublingually, under the tongue SOB shortness of breath sol. solutio: solution s.o.s., si op. sit si opus sit: if there is a need s.s., SS semisse: one-half [or] sliding scale mistaken for "55" or "1/2" SSI sliding scale insulin or sliding scale ...
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