# SageMath code for working with number field 30.0.67540340288911750220987142641365428116063232133203.1 # 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^30 - x^29 + 12*x^28 - 45*x^27 + 210*x^26 - 744*x^25 + 2465*x^24 - 6965*x^23 + 19758*x^22 - 48686*x^21 + 121619*x^20 - 306546*x^19 + 810012*x^18 - 2087415*x^17 + 5002572*x^16 - 11311375*x^15 + 24424402*x^14 - 49257771*x^13 + 88022499*x^12 - 134078913*x^11 + 172501038*x^10 - 188691174*x^9 + 176841252*x^8 - 141293241*x^7 + 95362353*x^6 - 55362204*x^5 + 28414476*x^4 - 12173571*x^3 + 3774762*x^2 - 708588*x + 59049) # 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^30 - x^29 + 12*x^28 - 45*x^27 + 210*x^26 - 744*x^25 + 2465*x^24 - 6965*x^23 + 19758*x^22 - 48686*x^21 + 121619*x^20 - 306546*x^19 + 810012*x^18 - 2087415*x^17 + 5002572*x^16 - 11311375*x^15 + 24424402*x^14 - 49257771*x^13 + 88022499*x^12 - 134078913*x^11 + 172501038*x^10 - 188691174*x^9 + 176841252*x^8 - 141293241*x^7 + 95362353*x^6 - 55362204*x^5 + 28414476*x^4 - 12173571*x^3 + 3774762*x^2 - 708588*x + 59049) 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)]