I found the error. The following one is correct now:
F.<a>=GF(16)
for b, c in F^2 :
print "x=",b,"y=",c, "T:",b*custom_divide((custom_divide(b,c))^4+a*(
custom_divide(b,c))^2+1,a*((custom_divide(b,c))^3+1)+(a^3+a^2)*((
custom_divide(b,c))^2+custom_divide(b,c)))+(b*c).nth_root(2)
W dniu wtorek, 8 maja 2012 20:34:31 UTC+2 użytkownik ArturZ napisał:
>
> Hi,
>
> I've one problem in the following task.
> My calculations:
>
> I'm defining following function:
>
>
> def custom_divide(x,y):
> if x==0:
> return 0
> return y/x
>
>
> Next, I'm calculating all possible values over *GF(16)* for the function *
> T*:
>
>
> F.<a>=GF(16)
> for a,b in F^2:
> print "x=",a,"y=",b, "T:",a*custom_divide((c+1)*((custom_divide(a,
> b))^3+1)+(c^3+c)*((custom_divide(a,b))^2+custom_divide(a,b)),(
> custom_divide(a,b))^4+(c+1)*(custom_divide(a,b))^2+1)+(a*b).nth_root(2)
>
>
> I know that c is not defined in that code but I wrote it there because it
> helps me with describing my problem.
> *c+1* and *c^3+c* are constants and I don't know how can I write them in
> my code. If I'll write:
>
>
> F.<a>=GF(16)
> for a,b in F^2:
> print "x=",a,"y=",b, "T:",a*custom_divide((a+1)*((
> custom_divide(a,b))^3+1)+(a^3+a)*((custom_divide(a,b))^2+custom_divide(a,b
> )),(custom_divide(a,b))^4+(a+1)*(custom_divide(a,b))^2+1)+(a*b).nth_root(2
> )
>
>
> then this constants will be equal to the variable *a* and will be change
> in every steps, but they should be the same in all cases.
>
> How can I correct my code?
>
> I'll be grateful for any help in this task.
>
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