#5136: constructing the ring of integers of a relative number field is SLOW
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Reporter: AlexGhitza | Owner: was
Type: defect | Status: new
Priority: major | Milestone: sage-3.3
Component: number theory | Resolution:
Keywords: |
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Changes (by AlexGhitza):
* priority: blocker => major
* summary: sage-3.3.alpha3 gets stuck computing the ring of integers of
a relative number field => constructing the
ring of integers of a relative number field is
SLOW
Comment:
It is, in fact, not an infinite loop. It's just really, really slow. It
also seems to pre-date 3.3.alpha3:
{{{
----------------------------------------------------------------------
| Sage Version 3.2.3, Release Date: 2009-01-05 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: K.<a> = QuadraticField(-23)
sage: L.<b> = K.extension(x^3 - x - 1)
sage: time OL = L.ring_of_integers()
CPU times: user 263.94 s, sys: 12.98 s, total: 276.92 s
Wall time: 280.13 s
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5136#comment:2>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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