#17516: Radical expressions for roots of polynomials using Galois theory
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Reporter: gagern | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.5
Component: number fields | Resolution:
Keywords: radical galois symbolic | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: #14239 | Stopgaps:
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Comment (by gagern):
Replying to [comment:4 jdemeyer]:
> I don't think need you need to convert the group to Sage, I would use
`galoisfixfield()` from PARI.
Passing which subgroup as an argument? I guess I should iterate over all
normal subgroups, using `galoissubgroups` and `galoisisnormal`, which
aren't available in Sage at the moment. #17519 should fix that.
I just started reading the chapter “How to solve a solvable equation” in
the book [http://www.worldcat.org/search?q=isbn:082840268X Classical
Galois Theory] by Lisl Gaal. That sounds very promising, since it
apparently concentrates on the algorithm, not the theorem.
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Ticket URL: <http://trac.sagemath.org/ticket/17516#comment:5>
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