[R] Need help

[peter dalgaard]

> On 30 Jul 2015, at 16:00 , MyList <mylisttech at gmail.com> wrote:
> 
> Dear All,
> 
> What are inner and outer matrix multiplication. Kindly guide me where to look for this Wikipedia was not much help.

I'd need some context to be sure, but some use tr(AB) as the inner product in a space of square matrices and the kronecker product (see its help page) is sometimes called an outer product.

-pd

> 
> Thanks in Advance,
> Harmeet
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-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
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Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com