From: Stephan Stiller <stephan.stiller_at_gmail.com>

Date: Sat, 09 Mar 2013 18:27:14 -0800

Date: Sat, 09 Mar 2013 18:27:14 -0800

*>> when teaching arithmetic × was typical, but when teaching elementary
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*>> algebra or higher math · was used
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*> I would agree with this. Essentially, it seems like "real" math – to
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*> the extent that it uses numbers beyond {0, 1, 2} in the first place
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*> :-) – uses ·
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Oh, now I understand your comment. Matrix multiplication has no dot (and

uses juxtaposition); the inner ("scalar") product uses · , and the cross

product uses × . I don't remember deviating usage or any variation of

that pattern, though I wouldn't be surprised if non-math disciplines in

the US have looser conventions for the inner vector product.

For ordinary clusters of numbers and variable names (where German usage

knows no × ), juxtaposition of numbers without some explicitly printed

operator naturally doesn't occur. In the US, × in place of · is like I

described – for my generation of people being educated.

Stephan

Received on Sat Mar 09 2013 - 20:28:28 CST

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