operating system : Manjaro Linux 0.8.9
version number : sage-mathematics-6.1.1-1-x86_64.pkg.tar.xz precompiled
package
reproducible example:
N = 35
E = EllipticCurve(Integers(N),[5,1])
P = E(0,1)
LCM([2..6])*P
Traceback (click to the left of this block for traceback)
...
UnboundLocalError: local variable 'ZZ' referenced before assignment
--------------------------------------------------------------------
I checked the code and I think it is easy to correct, in fact the solution is
used a few lines below when x1-x2 has no inverse in Z/NZ:
line 694:
if R.is_finite():
N = R.characteristic()
from sage.rings.all import ZZ <-------this part is missing
N1 = N.gcd(ZZ(2*y1 + a1*x1 + a3))
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