#19288: Make real/complex number field embeddings more accurate
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Reporter: pbruin | Owner:
Type: enhancement | Status: new
Priority: minor | Milestone: sage-6.9
Component: number fields | Resolution:
Keywords: | Merged in:
Authors: Jeroen Demeyer | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Description changed by jdemeyer:
Old description:
New description:
We should detect and work around this catastrophic cancellation:
{{{
sage: K.<a> = NumberField(x^2-x-104)
sage: D = -4754362903238080086532729679384769785488*a -
46166237460580684378417136025570042177152
sage: [v(D) for v in K.embeddings(RR)]
[0.000000000000000, -9.70868378243995e40]
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/19288#comment:6>
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