#20513: bug with cyclotomic fields embeddings and coercions
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Reporter: vdelecroix | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-7.2
Component: number fields | Resolution:
Keywords: | Merged in:
Authors: Vincent Delecroix | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/vdelecroix/20513 | c96139adf1ff7114315c312b7a2c97cd0e76940e
Dependencies: | Stopgaps:
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Changes (by vdelecroix):
* status: new => needs_review
* commit: => c96139adf1ff7114315c312b7a2c97cd0e76940e
* branch: => u/vdelecroix/20513
Old description:
> {{{
> sage: K60.<zeta60> = CyclotomicField(60)
> sage: K30.<zeta30> = CyclotomicField(30, embedding=zeta60**2)
> sage: K15.<zeta15> = CyclotomicField(15, embedding=zeta30**2)
> sage: K5.<zeta5> = CyclotomicField(5, embedding=zeta15**3)
> sage: zeta5 * zeta60
> # BOOM #
> }}}
New description:
{{{
sage: K60.<zeta60> = CyclotomicField(60)
sage: K30.<zeta30> = CyclotomicField(30, embedding=zeta60**2)
sage: K15.<zeta15> = CyclotomicField(15, embedding=zeta30**2)
sage: K5.<zeta5> = CyclotomicField(5, embedding=zeta15**3)
sage: zeta5 * zeta60
# BOOM #
}}}
see: https://groups.google.com/forum/#!topic/sage-support/J4rLkHUNU1E
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Comment:
New commits:
||[http://git.sagemath.org/sage.git/commit/?id=8d8602f93e38dd7fa9e8d0a8502d5454a9988d4c
8d8602f]||{{{Trac 20400: conversion rational in NF -> QQbar}}}||
||[http://git.sagemath.org/sage.git/commit/?id=c96139adf1ff7114315c312b7a2c97cd0e76940e
c96139a]||{{{Trac 20513: fix cyclotomic field embeddings}}}||
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Ticket URL: <http://trac.sagemath.org/ticket/20513#comment:1>
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