#4744: [with patch, needs review] congruence number for elliptic curves
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Reporter: robertwb | Owner: tbd
Type: defect | Status: new
Priority: major | Milestone:
Component: algebra | Keywords:
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{{{
sage: E = EllipticCurve('37a')
sage: E.congruence_number()
2
sage: E = EllipticCurve('54b')
sage: E.congruence_number()
6
sage: E.modular_degree()
2
sage: E = EllipticCurve('242a1')
sage: E.modular_degree()
16
sage: E.congruence_number() # long time
176
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4744>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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