#15448: cartesian products of projective space
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Reporter: bhutz | Owner: bhutz
Type: enhancement | Status: new
Priority: major | Milestone: sage-5.13
Component: algebraic geometry | Resolution:
Keywords: | Merged in:
Authors: bhutz | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by nbruin):
Have you tried working with multiply graded rings instead? Computing with
bihomogeneous polynomials in
`k[x0,x1,x2,y0,y1,y2]` tends to be MUCH more efficient than working in the
Segre embedding, because the rationality is much better expressed in the
bihomogeneous case. Having some functionality to obtain the Segre
embedding is of course useful, but I suspect that people having to work in
products of projective spaces would be better off with multiply graded
coordinate rings most of the time.
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Ticket URL: <http://trac.sagemath.org/ticket/15448#comment:2>
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