Faster class group computations using norm relations Examples : other Galois fields Degree 81, not abelian : ? pol = galoisgetpol(3^4,3)[1]; ? abbnf = abelianbnfinit(pol); cpu time = 17,142 ms. ? getcyc(abbnf) % = [] ? pol = galoisgetpol(3^4,7)[1]; ? abbnf = abelianbnfinit(pol); cpu time = 16,109 ms. ? getcyc(abbnf) % = []