#8997: riemann_roch_basis is implemented incorrectly in sage
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Reporter: was | Owner: AlexGhitza
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.6.1
Component: algebraic geometry | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Changes (by minz):
* status: needs_info => needs_review
Comment:
Following Jose's explanations on the Singular trac server, the modified
Sage wrapper should now work with the new patch. What the unmodified
wrapper did wrong was how it defined the divisor in Singular. There's
actually two lists that are important: The divisor needs to be defined
relative to the list of points C[3] (in the above example), but to know
which point the k-th entry of this list actually refers to, one has to
parse the list POINTS of the rings C[5][d][1], where d is the degree of
the point. -- The patch also modifies the documentation to illustrate this
with an example.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8997#comment:12>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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