Hi Sage developers. I'm new to Sage, and I think I have found a bug,
but I may very well be doing something wrong. I'm on Ubuntu 11.04
64bit using Sage 5.0. Code which produces the problem is below. Thank
you for any help.
----------------------------------------------------------------------
| Sage Version 5.0, Release Date: 2012-05-14 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: poly = CyclotomicField(43).subfields(3)[0][0].polynomial()
sage: poly
x^3 + x^2 - 14*x + 8
sage: K = NumberField(poly, 'a')
sage: E = EllipticCurve(K, '37')
sage: E
Elliptic Curve defined by y^2 + y = x^3 + (-1)*x over Number Field in
a with defining polynomial x^3 + x^2 - 14*x + 8
sage: E.simon_two_descent()
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
/home/blatm/<ipython console> in <module>()
/home/blatm/sage/sage-5.0-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/
local/lib/python2.7/site-packages/sage/schemes/elliptic_curves/
ell_number_field.pyc in simon_two_descent(self, verbose, lim1, lim3,
limtriv, maxprob, limbigprime)
281 verbose=verbose, lim1=lim1,
lim3=lim3, limtriv=limtriv,
282 maxprob=maxprob,
limbigprime=limbigprime)
--> 283 prob_rank = Integer(t[0])
284 two_selmer_rank = Integer(t[1])
285 prob_gens = [self(P) for P in t[2]]
/home/blatm/sage/sage-5.0-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/
local/lib/python2.7/site-packages/sage/rings/integer.so in
sage.rings.integer.Integer.__init__ (sage/rings/integer.c:6865)()
TypeError: unable to convert x (=f) to an integer
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