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Topic: matrix multiplication with zero dimensions
Replies: 11   Last Post: Jan 7, 2013 10:20 AM

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Matt J

Posts: 4,997
Registered: 11/28/09
Re: matrix multiplication with zero dimensions
Posted: Jan 6, 2013 7:32 PM
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"Bruno Luong" <b.luong@fogale.findmycountry> wrote in message <kcd1lg$6u4$>...
> "Matt J" wrote in message <kcd0g0$34t$>...
> Just like sum([]), prod([]), this result is no exception so to be documented separately.


I can see the rational behind sum([])=0and prod([])=1. It's so that


I do not see the rationale behind the originally posted relationship, though. Taking a slightly different example, I can see perhaps that


should end up being 3x3 because of the outer dimensions, but why should it end up containing zeros.

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