#20749: Use PARI nfeltup() for inclusion of base field into relative number
field
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Reporter: pbruin | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-7.3
Component: number fields | Keywords: pari
Merged in: | Authors: Peter Bruin
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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As noticed in #20693, construction of elements of a relative number field
from elements of the base field is extremely slow. This is because
`NumberField_relative.__base_inclusion()` uses the PARI function
`eltreltoabs`, which converts arbitrary relative number field elements
into absolute representation; instead, it should use the much faster
`nfeltup`.
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Ticket URL: <http://trac.sagemath.org/ticket/20749>
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