Talk:Number: Difference between revisions

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imported>Olier Raby
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imported>Boris Tsirelson
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== Writing a number ==
"An irrational number can not be written as a fraction, and can indeed not be written out fully at all." — Really? In which sense?
"The numbers π and <math>\sqrt{2}</math> are both irrational." — Are they ''written'' in this phrase? What exactly is meant here by ''written''? It depends on the used language. In some languages 1/3 cannot be written. In some languages <math>\sqrt{2}</math> can. [[User:Boris Tsirelson|Boris Tsirelson]] 11:39, 4 June 2010 (UTC)

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 Definition One of the fundamental concepts of mathematics, used for such purposes as counting, ordering, and measuring. [d] [e]
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Writing a number

"An irrational number can not be written as a fraction, and can indeed not be written out fully at all." — Really? In which sense? "The numbers π and are both irrational." — Are they written in this phrase? What exactly is meant here by written? It depends on the used language. In some languages 1/3 cannot be written. In some languages can. Boris Tsirelson 11:39, 4 June 2010 (UTC)