On 9 November 2016 at 00:25, francisco wrote:
> Hello,
>
> I have been computing modular symbols for distinct curves on the Cremona
> data base.
> But, in a few curves, I recived a WARNING messages like this:
>
> Warning : Could not normalize the modular symbols, maybe all further
> results will b
Hello,
I have been computing modular symbols for distinct curves on the Cremona
data base.
But, in a few curves, I recived a WARNING messages like this:
Warning : Could not normalize the modular symbols, maybe all further
results will be multiplied by -1, 2 or -2.
Why sage does not give the exa
