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I know that "norm" is the formal name for length, but where did this name came from? or from what language is came from?

Thank you in advance.

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It is derived from the Latin word norma, which means rule or standard. ‘Ruler’ — a straight stick that measures length — has the same origin, which is pretty much the same as what a norm does in mathematics.

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  • $\begingroup$ I agree that is the etymology of "norm" in its ordinary English usage. But how did it come to be used in maths? $\endgroup$ – almagest Jun 20 '16 at 10:12

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