# SageMath code for working with number field 42.42.86515994746897550947675385197225985831622982825258543026271873735800731799783414431744.1 # Some of these functions may take a long time to execute (this depends on the field). # Define the number field: x = polygen(QQ); K. = NumberField(x^42 - 86*x^40 + 3440*x^38 - 84968*x^36 + 1450992*x^34 - 18175584*x^32 + 172913664*x^30 - 1276267520*x^28 + 7402351616*x^26 - 33963730944*x^24 + 123504476160*x^22 - 355075368960*x^20 + 801783091200*x^18 - 1406204190720*x^16 + 1884175073280*x^14 - 1884175073280*x^12 + 1360793108480*x^10 - 677317836800*x^8 + 216741707776*x^6 - 39926104064*x^4 + 3471835136*x^2 - 90177536) # Defining polynomial: K.defining_polynomial() # Degree over Q: K.degree() # Signature: K.signature() # Discriminant: K.disc() # Ramified primes: K.disc().support() # Autmorphisms: K.automorphisms() # Integral basis: K.integral_basis() # Class group: K.class_group().invariants() # Unit group: UK = K.unit_group() # Unit rank: UK.rank() # Generator for roots of unity: UK.torsion_generator() # Fundamental units: UK.fundamental_units() # Regulator: K.regulator() # Analytic class number formula: # self-contained SageMath code snippet to compute the analytic class number formula x = polygen(QQ); K. = NumberField(x^42 - 86*x^40 + 3440*x^38 - 84968*x^36 + 1450992*x^34 - 18175584*x^32 + 172913664*x^30 - 1276267520*x^28 + 7402351616*x^26 - 33963730944*x^24 + 123504476160*x^22 - 355075368960*x^20 + 801783091200*x^18 - 1406204190720*x^16 + 1884175073280*x^14 - 1884175073280*x^12 + 1360793108480*x^10 - 677317836800*x^8 + 216741707776*x^6 - 39926104064*x^4 + 3471835136*x^2 - 90177536) DK = K.disc(); r1,r2 = K.signature(); RK = K.regulator(); RR = RK.parent() hK = K.class_number(); wK = K.unit_group().torsion_generator().order(); 2^r1 * (2*RR(pi))^r2 * RK * hK / (wK * RR(sqrt(abs(DK)))) # Intermediate fields: K.subfields()[1:-1] # Galois group: K.galois_group(type='pari') # Frobenius cycle types: # to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ for $p=7$ in Sage: p = 7; [(e, pr.norm().valuation(p)) for pr,e in K.factor(p)]