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#How to write math symbols on keyboard full#
In some languages, the use of full stop as a multiplication symbol, such as a. This notation is used wherever multiplication should be written explicitly, such as in " ab = a⋅2 for b = 2" this usage is also seen in English-language texts. This symbol is also used in algebraic notation to resolve ambiguity (for instance, "b times 2" may be written as b⋅2, to avoid being confused with a value called b 2). In some countries, such as Germany, the primary symbol for multiplication is the " dot operator" ⋅ (as in a⋅b). Other symbols can also be used to denote multiplication, often to reduce confusion between the multiplication sign × and the common variable x. In algebraic notation, widely used in mathematics, a multiplication symbol is usually omitted wherever it would not cause confusion: " a multiplied by b" can be written as ab or a b. This is considered incorrect in mathematical writing. The lower-case Latin letter x is sometimes used in place of the multiplication sign. Main article: Multiplication: Notation and terminology Ī monadic × symbol is used by the APL programming language to denote the sign function. When employed between two dates – for example 12 – the expression "1225×1232" means "no earlier than 1225 and no later than 1232". The multiplication sign is also used by historians for an event between two dates. However, the communication of these hybrid names with a Latin letter "x" is common, when the actual "×" symbol is not readily available. impressus) or Crocosmia × crocosmiiflora (a hybrid between two other species of Crocosmia).
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In biology, the multiplication sign is used in a botanical hybrid name, for instance Ceanothus papillosus × impressus (a hybrid between C.
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Cross product of two vectors, where it is usually read as "cross".Multiplication of two numbers, where it is read as "times" or "multiplied by".In mathematics, the symbol × has a number of uses, including Two earlier uses of a ✕ notation have been identified, but do not stand critical examination. "Multiplication of species connects both proposed magnitudes with the symbol 'in' or ×: or ordinarily without the symbol if the magnitudes be denoted with one letter." This appendix has been attributed to William Oughtred, who used the same symbol in his 1631 algebra text, Clavis Mathematicae, stating: The earliest known use of the × symbol to represent multiplication appears in an anonymous appendix to the 1618 edition of John Napier's Mirifici Logarithmorum Canonis Descriptio.