# Oscar code for working with number field 24.4.91810054652229848026521481130092527303208363056182861328125.1. # If you have not already loaded the Oscar package, you should type "using Oscar;" before running the code below. # Some of these functions may take a long time to execute (this depends on the field). # Define the number field: Qx, x = polynomial_ring(QQ); K, a = number_field(x^24 - 4*x^23 + 6*x^22 - 449*x^21 + 4273*x^20 + 5874*x^19 + 40584*x^18 - 1486656*x^17 + 320934*x^16 + 31758582*x^15 + 203615891*x^14 - 1041728624*x^13 - 8957494979*x^12 + 15522090746*x^11 + 187723100658*x^10 - 120260671411*x^9 - 2012872155141*x^8 + 555294801359*x^7 + 10666291776869*x^6 + 2324146207637*x^5 - 37689124873554*x^4 - 13595215964929*x^3 + 96703661945176*x^2 - 15091490947869*x - 91903199858837) # Defining polynomial: defining_polynomial(K) # Degree over Q: degree(K) # Signature: signature(K) # Discriminant: OK = ring_of_integers(K); discriminant(OK) # Ramified primes: prime_divisors(discriminant(OK)) # Automorphisms: automorphism_group(K) # Integral basis: basis(OK) # Class group: class_group(K) # Unit group: UK, fUK = unit_group(OK) # Unit rank: rank(UK) # Generator for roots of unity: torsion_units_generator(OK) # Fundamental units: [K(fUK(a)) for a in gens(UK)] # Regulator: regulator(K) # Analytic class number formula: # self-contained Oscar code snippet to compute the analytic class number formula Qx, x = polynomial_ring(QQ); K, a = number_field(x^24 - 4*x^23 + 6*x^22 - 449*x^21 + 4273*x^20 + 5874*x^19 + 40584*x^18 - 1486656*x^17 + 320934*x^16 + 31758582*x^15 + 203615891*x^14 - 1041728624*x^13 - 8957494979*x^12 + 15522090746*x^11 + 187723100658*x^10 - 120260671411*x^9 - 2012872155141*x^8 + 555294801359*x^7 + 10666291776869*x^6 + 2324146207637*x^5 - 37689124873554*x^4 - 13595215964929*x^3 + 96703661945176*x^2 - 15091490947869*x - 91903199858837); OK = ring_of_integers(K); DK = discriminant(OK); UK, fUK = unit_group(OK); clK, fclK = class_group(OK); r1,r2 = signature(K); RK = regulator(K); RR = parent(RK); hK = order(clK); wK = torsion_units_order(K); 2^r1 * (2*pi)^r2 * RK * hK / (wK * sqrt(RR(abs(DK)))) # Intermediate fields: subfields(K)[2:end-1] # Galois group: G, Gtx = galois_group(K); degree(K) > 1 ? (G, transitive_group_identification(G)) : (G, nothing) # Frobenius cycle types: # to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Oscar: p = 7; pfac = factor(ideal(ring_of_integers(K), p)); [(e, valuation(norm(pr),p)) for (pr,e) in pfac]