reu-2011-06-20

338 days ago by arabindr

# given a curve this spits out lots of data K.<a> = NumberField(x^2 - x - 1) E = EllipticCurve(K, [a,a+1,a,2*a,a]); var = E.simon_two_descent() tor = E.two_torsion_rank(); print var[1] - tor; c = E.conductor(); print c; print norm(c); D = E.discriminant(); j = E.j_invariant(); d = j.denominator_ideal(); pa = K.primes_above(d) print len(E.torsion_subgroup()) v = K.embeddings(RR); print v[0](D); print v[1](D); for i in range(len(pa)): print D.valuation(pa[i]) for i in range(len(pa)): print d.valuation(pa[i]) for i in range(len(pa)): print E.tamagawa_number(pa[i]) for i in range(len(pa)): print E.kodaira_symbol(pa[i]) 
       
0
Fractional ideal (2*a - 11)
95
6
37.8115294937453
-62.8115294937453
3
1
3
1
3
1
I3
I1
0
Fractional ideal (2*a - 11)
95
6
37.8115294937453
-62.8115294937453
3
1
3
1
3
1
I3
I1