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Package sage :: Package tables :: Module cremona |
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Classes | |
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CremonaCurve |
Class that defines an elliptic curve in the database. |
Function Summary | |
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Return the curve with given Cremona label. | |
Return the list of all curves in the database with given conductor, grouped into sublists by isogeny class. | |
Load data from one of Cremona's allcurves files, from start to stop. | |
Load data from one of Cremona's degphi files, from start to stop. | |
Return the list of all optimal curves in the database with given conductor. | |
This function saves a list of curves (grouped by isogeny class) to disk. |
Variable Summary | |
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str |
PATH = '/home/was/sage//src/data/cremona/'
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Function Details |
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curve(label)Return the curve with given Cremona label. |
curves(conductor)Return the list of all curves in the database with given conductor, grouped into sublists by isogeny class. INPUT: conductor - an integer or a list of integers. If a list, returns all curves with conductor in the list. |
import_allcurves(file, start, stop)Load data from one of Cremona's allcurves files, from start to stop. |
import_degphi(file, start, stop)Load data from one of Cremona's degphi files, from start to stop. |
optimal_curves(conductor)Return the list of all optimal curves in the database with given conductor. INPUT: conductor - an integer or a list of integers. If a list, returns all curves with conductor in the list. |
save_curves(curves)This function saves a list of curves (grouped by isogeny class) to disk. It extracts the conductor, hence filename, from the first curve in the list. If the list is empty, nothing happens. This function is mainly useful when you load a list of curves of some conductor, add some data about them, and want to save it again for later. Do not use this function on a list of just optimal curves, or you'll overwrite the file. INPUT: curves -- list of *all* curves of a given conductor |
Variable Details |
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PATH
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