# Oscar code for working with number field 24.4.6769025210045733840131040987091228089411742985248565673828125.5. # 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 - 4*x^21 + x^20 - 1305*x^19 - 10005*x^18 - 30305*x^17 - 52780*x^16 + 1127520*x^15 + 2873900*x^14 + 19324150*x^13 + 65927150*x^12 + 57825275*x^11 - 1875785975*x^10 - 3653343875*x^9 + 4226336750*x^8 + 31324081750*x^7 - 91930159500*x^6 - 128610048250*x^5 + 436357363125*x^4 + 79569910000*x^3 - 882473280625*x^2 + 125130178750*x + 751938081875) # 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 - 4*x^21 + x^20 - 1305*x^19 - 10005*x^18 - 30305*x^17 - 52780*x^16 + 1127520*x^15 + 2873900*x^14 + 19324150*x^13 + 65927150*x^12 + 57825275*x^11 - 1875785975*x^10 - 3653343875*x^9 + 4226336750*x^8 + 31324081750*x^7 - 91930159500*x^6 - 128610048250*x^5 + 436357363125*x^4 + 79569910000*x^3 - 882473280625*x^2 + 125130178750*x + 751938081875); 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]