#10545: Add the outer product of two vectors
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Reporter: rbeezer | Owner: jason, was
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-4.6.2
Component: linear algebra | Keywords:
Author: Rob Beezer | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by nbruin):
I didn't know that is sometimes used as a definition of "outer product",
but Wikipedia backs you up on it.
In other languages, "exterior product" translates to the same word as
"outer product", so a -1 from me for having this definition of outer
product. I think this term will be a source of confusion.
If someone needs the tensor product, it is easy enough to get via the one-
liner
{{{
lambda v,w: matrix(len(v),len(w),[a*b for a in v for b in w])
}}}
(given Sage's preference for row vectors versus the preference of most LA
texts for column vectors, I expect that relating inner/outer products to a
question of where to put the transpose is only going to cause *more*
confusion in students, by the way)
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10545#comment:2>
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