/* This code can be loaded, or copied and pasted, into Magma. It will load the data associated to the HMF, including the field, level, and Hecke and Atkin-Lehner eigenvalue data. At the *bottom* of the file, there is code to recreate the Hilbert modular form in Magma, by creating the HMF space and cutting out the corresponding Hecke irreducible subspace. From there, you can ask for more eigenvalues or modify as desired. It is commented out, as this computation may be lengthy. */ P := PolynomialRing(Rationals()); g := P![-67, 0, 1]; F := NumberField(g); ZF := Integers(F); NN := ideal; primesArray := [ [2, 2, -27*w + 221], [3, 3, -w + 8], [3, 3, -w - 8], [7, 7, -11*w + 90], [7, 7, -11*w - 90], [11, 11, 6*w - 49], [11, 11, 6*w + 49], [17, 17, 4*w + 33], [17, 17, -4*w + 33], [25, 5, -5], [29, 29, -70*w + 573], [29, 29, 151*w - 1236], [31, 31, -w - 6], [31, 31, w - 6], [37, 37, -21*w - 172], [37, 37, -21*w + 172], [43, 43, 2*w - 15], [43, 43, 2*w + 15], [67, 67, -w], [73, 73, -3*w - 26], [73, 73, -3*w + 26], [79, 79, 92*w - 753], [79, 79, 313*w - 2562], [89, 89, -5*w - 42], [89, 89, -5*w + 42], [139, 139, 10*w + 81], [139, 139, 10*w - 81], [149, 149, 19*w - 156], [149, 149, -19*w - 156], [157, 157, -102*w + 835], [157, 157, 561*w - 4592], [169, 13, -13], [173, 173, 2*w - 21], [173, 173, -2*w - 21], [179, 179, 87*w - 712], [179, 179, 87*w + 712], [181, 181, 3*w - 28], [181, 181, 3*w + 28], [191, 191, 15*w - 122], [191, 191, 15*w + 122], [193, 193, 36*w + 295], [193, 193, -36*w + 295], [239, 239, 12*w + 97], [239, 239, 12*w - 97], [241, 241, -183*w + 1498], [241, 241, 480*w - 3929], [251, 251, 45*w + 368], [251, 251, 45*w - 368], [257, 257, -w - 18], [257, 257, w - 18], [269, 269, 41*w + 336], [269, 269, -41*w + 336], [271, 271, 40*w - 327], [271, 271, -40*w - 327], [277, 277, 426*w - 3487], [277, 277, -237*w + 1940], [293, 293, -998*w + 8169], [293, 293, 107*w - 876], [311, 311, 804*w - 6581], [311, 311, 141*w - 1154], [317, 317, -7*w + 60], [317, 317, -7*w - 60], [331, 331, 254*w - 2079], [331, 331, 475*w - 3888], [347, 347, -3*w - 16], [347, 347, 3*w - 16], [349, 349, -9*w - 76], [349, 349, -9*w + 76], [361, 19, -19], [367, 367, 7*w + 54], [367, 367, 7*w - 54], [379, 379, 5*w + 36], [379, 379, 5*w - 36], [383, 383, 168*w - 1375], [383, 383, 831*w - 6802], [389, 389, 34*w - 279], [389, 389, -34*w - 279], [397, 397, -6*w - 53], [397, 397, -6*w + 53], [421, 421, -3*w - 32], [421, 421, 3*w - 32], [443, 443, -27*w - 220], [443, 443, -27*w + 220], [449, 449, -4*w - 39], [449, 449, 4*w - 39], [457, 457, 51*w + 418], [457, 457, -51*w + 418], [461, 461, 2*w - 27], [461, 461, -2*w - 27], [463, 463, 136*w + 1113], [463, 463, 136*w - 1113], [487, 487, 32*w + 261], [487, 487, -32*w + 261], [499, 499, -62*w - 507], [499, 499, 62*w - 507], [503, 503, -3*w - 10], [503, 503, 3*w - 10], [509, 509, -w - 24], [509, 509, w - 24], [529, 23, -23], [547, 547, 47*w + 384], [547, 547, -47*w + 384], [557, 557, 14*w - 117], [557, 557, 14*w + 117], [563, 563, 6*w + 43], [563, 563, 6*w - 43], [569, 569, -56*w - 459], [569, 569, 56*w - 459], [587, 587, -3*w - 4], [587, 587, 3*w - 4], [599, 599, 3*w - 2], [599, 599, -3*w - 2], [601, 601, 117*w - 958], [601, 601, 117*w + 958], [613, 613, 6*w - 55], [613, 613, -6*w - 55], [617, 617, -269*w + 2202], [617, 617, 836*w - 6843], [631, 631, -4*w - 21], [631, 631, 4*w - 21], [647, 647, 21*w - 170], [647, 647, 21*w + 170], [683, 683, 18*w + 145], [683, 683, 18*w - 145], [709, 709, 30*w - 247], [709, 709, 30*w + 247], [727, 727, 416*w - 3405], [727, 727, 637*w - 5214], [739, 739, 158*w - 1293], [739, 739, 158*w + 1293], [761, 761, -100*w - 819], [761, 761, -100*w + 819], [773, 773, 122*w + 999], [773, 773, 122*w - 999], [787, 787, -1322*w + 10821], [787, 787, -217*w + 1776], [797, 797, 674*w - 5517], [797, 797, -431*w + 3528], [811, 811, 14*w - 111], [811, 811, 14*w + 111], [821, 821, 2*w - 33], [821, 821, -2*w - 33], [829, 829, -66*w - 541], [829, 829, 66*w - 541], [853, 853, -171*w - 1400], [853, 853, 171*w - 1400], [877, 877, 54*w - 443], [877, 877, -54*w - 443], [881, 881, 1300*w - 10641], [881, 881, -247*w + 2022], [883, 883, 31*w + 252], [883, 883, 31*w - 252], [919, 919, 13*w + 102], [919, 919, 13*w - 102], [953, 953, 4*w - 45], [953, 953, -4*w - 45], [977, 977, -71*w - 582], [977, 977, 71*w - 582], [983, 983, 36*w - 293], [983, 983, 36*w + 293], [991, 991, -4*w - 9], [991, 991, 4*w - 9], [997, 997, 3*w - 40], [997, 997, -3*w - 40]]; primes := [ideal : I in primesArray]; heckePol := x^7 - 2*x^6 - 6*x^5 + 12*x^4 + 9*x^3 - 18*x^2 - 4*x + 7; K := NumberField(heckePol); heckeEigenvaluesArray := [e, -1, -e^6 + e^5 + 6*e^4 - 4*e^3 - 8*e^2 + e + 2, -2*e^6 + e^5 + 13*e^4 - 4*e^3 - 23*e^2 + e + 12, 2*e^6 - 15*e^4 - e^3 + 32*e^2 + 3*e - 17, e^6 - 2*e^5 - 5*e^4 + 9*e^3 + 5*e^2 - 5*e, -e^6 + 3*e^5 + 5*e^4 - 15*e^3 - 4*e^2 + 12*e - 1, -e^6 + e^5 + 7*e^4 - 4*e^3 - 15*e^2 + 2*e + 11, -4*e^6 + 4*e^5 + 24*e^4 - 20*e^3 - 34*e^2 + 17*e + 10, -e^6 + 7*e^4 + 2*e^3 - 13*e^2 - 5*e + 2, -5*e^6 + 5*e^5 + 29*e^4 - 22*e^3 - 35*e^2 + 12*e + 3, 2*e^5 - e^4 - 13*e^3 + 5*e^2 + 16*e - 5, -4*e^6 + 3*e^5 + 26*e^4 - 16*e^3 - 44*e^2 + 19*e + 18, -e^5 + 6*e^3 - 7*e + 5, 3*e^6 - 3*e^5 - 20*e^4 + 14*e^3 + 35*e^2 - 8*e - 16, -2*e^6 + 2*e^5 + 10*e^4 - 7*e^3 - 4*e^2 - 3*e - 7, -e^6 - e^5 + 10*e^4 + 3*e^3 - 26*e^2 + 3*e + 18, 3*e^6 - 3*e^5 - 19*e^4 + 16*e^3 + 33*e^2 - 17*e - 15, -5*e^6 + 6*e^5 + 27*e^4 - 29*e^3 - 32*e^2 + 22*e + 14, 3*e^6 - 3*e^5 - 17*e^4 + 12*e^3 + 18*e^2 - 6*e + 4, e^6 - 6*e^4 + 8*e^2 + 3*e - 3, 4*e^6 - 5*e^5 - 25*e^4 + 24*e^3 + 41*e^2 - 20*e - 18, -3*e^6 + 3*e^5 + 13*e^4 - 12*e^3 - 4*e^2 + 4*e - 4, -8*e^6 + 10*e^5 + 47*e^4 - 49*e^3 - 63*e^2 + 39*e + 20, e^6 + 2*e^5 - 6*e^4 - 10*e^3 + 8*e^2 + 6*e - 2, 4*e^5 + e^4 - 19*e^3 - 10*e^2 + 13*e + 17, -2*e^6 - 3*e^5 + 17*e^4 + 16*e^3 - 41*e^2 - 19*e + 33, e^6 - 2*e^5 - 3*e^4 + 7*e^3 - 8*e^2 + 3*e + 13, -e^6 + 2*e^5 + e^4 - 15*e^3 + 17*e^2 + 25*e - 20, -3*e^6 - 4*e^5 + 24*e^4 + 26*e^3 - 49*e^2 - 38*e + 20, 3*e^5 - 2*e^4 - 16*e^3 + 7*e^2 + 16*e + 1, 6*e^6 - 7*e^5 - 41*e^4 + 35*e^3 + 78*e^2 - 30*e - 45, -6*e^5 + 5*e^4 + 31*e^3 - 26*e^2 - 24*e + 16, e^6 + 3*e^5 - 12*e^4 - 21*e^3 + 36*e^2 + 35*e - 23, e^6 + 3*e^5 - 15*e^4 - 18*e^3 + 45*e^2 + 22*e - 19, 3*e^6 - 8*e^5 - 11*e^4 + 43*e^3 - 6*e^2 - 40*e + 13, -e^6 + 6*e^5 + e^4 - 32*e^3 + 12*e^2 + 28*e - 4, e^6 - 5*e^5 - e^4 + 21*e^3 - 9*e^2 - 8*e + 5, -2*e^6 + 4*e^5 + 18*e^4 - 24*e^3 - 49*e^2 + 21*e + 40, -5*e^6 + 8*e^5 + 25*e^4 - 40*e^3 - 10*e^2 + 33*e - 20, -2*e^6 - 4*e^5 + 25*e^4 + 20*e^3 - 77*e^2 - 17*e + 52, 5*e^6 - e^5 - 36*e^4 + 6*e^3 + 72*e^2 - 12*e - 38, 5*e^6 - 10*e^5 - 27*e^4 + 49*e^3 + 30*e^2 - 40*e - 4, -12*e^6 + 19*e^5 + 63*e^4 - 97*e^3 - 60*e^2 + 85*e + 12, 5*e^6 + 6*e^5 - 42*e^4 - 38*e^3 + 92*e^2 + 49*e - 33, 8*e^6 - 17*e^5 - 43*e^4 + 87*e^3 + 46*e^2 - 80*e - 9, 19*e^6 - 22*e^5 - 108*e^4 + 105*e^3 + 139*e^2 - 81*e - 39, 2*e^6 - 4*e^5 - 6*e^4 + 20*e^3 - 14*e^2 - 16*e + 16, 3*e^5 + 5*e^4 - 18*e^3 - 27*e^2 + 14*e + 28, 9*e^6 - 15*e^5 - 50*e^4 + 68*e^3 + 59*e^2 - 41*e - 14, -8*e^6 + 5*e^5 + 57*e^4 - 27*e^3 - 111*e^2 + 28*e + 48, 7*e^6 - 51*e^4 - 5*e^3 + 99*e^2 + 6*e - 37, e^6 + e^5 - 13*e^4 - 4*e^3 + 44*e^2 + 6*e - 34, -12*e^6 + 20*e^5 + 63*e^4 - 101*e^3 - 67*e^2 + 84*e + 19, -4*e^6 + 9*e^5 + 19*e^4 - 50*e^3 - 13*e^2 + 60*e + 2, 3*e^6 - 8*e^5 - 10*e^4 + 37*e^3 - 13*e^2 - 25*e + 20, 10*e^6 + 2*e^5 - 78*e^4 - 17*e^3 + 169*e^2 + 25*e - 83, -7*e^6 + 10*e^5 + 42*e^4 - 47*e^3 - 74*e^2 + 31*e + 53, -8*e^6 + 8*e^5 + 51*e^4 - 41*e^3 - 82*e^2 + 40*e + 29, -2*e^6 - 10*e^5 + 29*e^4 + 50*e^3 - 105*e^2 - 32*e + 88, -12*e^6 + 7*e^5 + 75*e^4 - 32*e^3 - 108*e^2 + 23*e + 20, 7*e^6 - 11*e^5 - 43*e^4 + 56*e^3 + 71*e^2 - 52*e - 38, -2*e^6 + e^5 + 14*e^4 - 34*e^2 - 10*e + 23, 2*e^6 - 10*e^4 + 7*e^2 - 4*e + 10, -10*e^6 + 14*e^5 + 61*e^4 - 74*e^3 - 89*e^2 + 63*e + 27, 12*e^6 - 3*e^5 - 81*e^4 + 3*e^3 + 151*e^2 + 23*e - 74, -2*e^6 + 2*e^5 + 14*e^4 + e^3 - 31*e^2 - 23*e + 16, 9*e^6 - 5*e^5 - 58*e^4 + 17*e^3 + 104*e^2 + 3*e - 52, 16*e^6 - 19*e^5 - 90*e^4 + 94*e^3 + 108*e^2 - 73*e - 25, -2*e^6 - e^5 + 8*e^4 + 10*e^3 - 4*e^2 - 11*e + 14, 6*e^6 - 4*e^5 - 28*e^4 + 14*e^3 + 13*e^2 + 27, 5*e^6 - 3*e^5 - 28*e^4 + 13*e^3 + 39*e^2 - 9*e - 8, -4*e^6 + 10*e^5 + 13*e^4 - 53*e^3 + 11*e^2 + 64*e - 5, -8*e^6 + 6*e^5 + 56*e^4 - 29*e^3 - 104*e^2 + 29*e + 39, 10*e^5 - 16*e^4 - 42*e^3 + 80*e^2 + 17*e - 66, -e^6 - e^5 + 15*e^4 + 4*e^3 - 60*e^2 + 13*e + 55, -17*e^6 + 19*e^5 + 101*e^4 - 92*e^3 - 139*e^2 + 69*e + 51, -10*e^6 + 13*e^5 + 57*e^4 - 62*e^3 - 79*e^2 + 58*e + 35, 2*e^6 + 6*e^5 - 31*e^4 - 34*e^3 + 113*e^2 + 34*e - 76, -6*e^6 - 2*e^5 + 52*e^4 + 8*e^3 - 121*e^2 + 4*e + 70, 12*e^6 - 19*e^5 - 65*e^4 + 90*e^3 + 72*e^2 - 69*e - 4, 3*e^6 - 9*e^5 - 8*e^4 + 45*e^3 - 23*e^2 - 36*e + 36, 5*e^6 - 6*e^5 - 22*e^4 + 29*e^3 - 4*e^2 - 27*e + 36, 7*e^6 - 7*e^5 - 37*e^4 + 41*e^3 + 30*e^2 - 48*e + 4, 9*e^6 - 3*e^5 - 54*e^4 + 7*e^3 + 75*e^2 + 11*e - 25, -10*e^6 + 5*e^5 + 61*e^4 - 16*e^3 - 89*e^2 - 11*e + 17, 13*e^6 - 22*e^5 - 62*e^4 + 105*e^3 + 34*e^2 - 76*e + 24, 9*e^6 - 4*e^5 - 56*e^4 + 7*e^3 + 88*e^2 + 28*e - 36, 14*e^6 - 16*e^5 - 81*e^4 + 74*e^3 + 92*e^2 - 46*e - 4, -7*e^6 + 3*e^5 + 48*e^4 - 10*e^3 - 90*e^2 - 8*e + 45, 12*e^6 - 4*e^5 - 87*e^4 + 13*e^3 + 175*e^2 - 2*e - 90, -4*e^6 + 15*e^5 + 13*e^4 - 80*e^3 + 15*e^2 + 71*e - 16, -10*e^6 + 14*e^5 + 60*e^4 - 73*e^3 - 88*e^2 + 67*e + 26, 11*e^6 - 16*e^5 - 65*e^4 + 81*e^3 + 80*e^2 - 63*e - 7, 13*e^6 - 5*e^5 - 90*e^4 + 19*e^3 + 174*e^2 + 3*e - 88, 17*e^6 - 16*e^5 - 100*e^4 + 68*e^3 + 144*e^2 - 34*e - 58, -5*e^6 - 7*e^5 + 32*e^4 + 48*e^3 - 53*e^2 - 74*e + 23, 15*e^6 - 16*e^5 - 101*e^4 + 80*e^3 + 173*e^2 - 63*e - 67, -2*e^6 + 12*e^5 + 10*e^4 - 60*e^3 - 22*e^2 + 51*e + 29, 2*e^6 + 4*e^5 - 23*e^4 - 19*e^3 + 69*e^2 + 17*e - 46, 14*e^6 - 10*e^5 - 85*e^4 + 50*e^3 + 109*e^2 - 37*e - 6, 6*e^6 - 3*e^5 - 54*e^4 + 13*e^3 + 146*e^2 - 17*e - 97, -9*e^6 + 13*e^5 + 56*e^4 - 64*e^3 - 98*e^2 + 50*e + 63, -22*e^6 + 2*e^5 + 153*e^4 + 3*e^3 - 289*e^2 - 33*e + 137, 14*e^6 - 6*e^5 - 96*e^4 + 30*e^3 + 175*e^2 - 36*e - 71, 11*e^6 - 7*e^5 - 76*e^4 + 33*e^3 + 141*e^2 - 16*e - 69, -e^6 + 6*e^5 + 10*e^4 - 26*e^3 - 30*e^2 + 8*e + 13, 11*e^6 - 8*e^5 - 71*e^4 + 41*e^3 + 117*e^2 - 50*e - 29, -10*e^6 + 2*e^5 + 74*e^4 - 7*e^3 - 153*e^2 + 13*e + 88, -e^6 - 12*e^5 + 28*e^4 + 62*e^3 - 112*e^2 - 60*e + 74, -11*e^5 + 61*e^3 + e^2 - 58*e - 18, 15*e^6 - 13*e^5 - 87*e^4 + 64*e^3 + 108*e^2 - 53*e - 16, -18*e^6 + 17*e^5 + 105*e^4 - 86*e^3 - 139*e^2 + 76*e + 37, -5*e^6 + 10*e^5 + 22*e^4 - 41*e^3 + 6*e^2 + 6*e - 32, 15*e^6 - 12*e^5 - 87*e^4 + 43*e^3 + 116*e^2 - e - 22, e^6 + 2*e^5 - 5*e^4 - 11*e^3 - e^2 + 5*e + 20, -4*e^6 + 2*e^5 + 32*e^4 - 12*e^3 - 72*e^2 + 14*e + 31, 4*e^6 - 6*e^5 - 22*e^4 + 25*e^3 + 43*e^2 - e - 51, -7*e^6 + e^5 + 45*e^4 - 7*e^3 - 60*e^2 + 8*e + 2, 8*e^6 - 10*e^5 - 42*e^4 + 48*e^3 + 56*e^2 - 38*e - 41, -e^6 + 4*e^5 - 19*e^3 + 18*e^2 + 13*e + 18, 3*e^6 - 7*e^5 - 4*e^4 + 38*e^3 - 36*e^2 - 44*e + 24, -5*e^6 + 12*e^5 + 30*e^4 - 66*e^3 - 52*e^2 + 83*e + 30, 3*e^6 - 4*e^5 - 9*e^4 + 12*e^3 - 22*e^2 + 8*e + 37, 2*e^6 + 11*e^5 - 20*e^4 - 69*e^3 + 53*e^2 + 73*e - 23, -2*e^6 - 20*e^5 + 40*e^4 + 107*e^3 - 144*e^2 - 113*e + 83, -14*e^6 + 15*e^5 + 85*e^4 - 74*e^3 - 123*e^2 + 58*e + 52, 16*e^6 - 22*e^5 - 81*e^4 + 105*e^3 + 68*e^2 - 78*e - 5, 8*e^6 - 5*e^5 - 57*e^4 + 20*e^3 + 117*e^2 - 11*e - 52, -e^6 - 6*e^4 + 13*e^3 + 54*e^2 - 36*e - 39, 21*e^6 - 20*e^5 - 131*e^4 + 93*e^3 + 207*e^2 - 67*e - 78, -21*e^6 + 18*e^5 + 117*e^4 - 68*e^3 - 134*e^2 + 13*e + 12, e^6 - 15*e^5 + 14*e^4 + 86*e^3 - 83*e^2 - 101*e + 52, 16*e^6 - 21*e^5 - 82*e^4 + 101*e^3 + 78*e^2 - 92*e - 11, -17*e^6 + 9*e^5 + 112*e^4 - 43*e^3 - 189*e^2 + 24*e + 95, 3*e^6 + 12*e^5 - 32*e^4 - 66*e^3 + 92*e^2 + 67*e - 43, 16*e^6 - 13*e^5 - 110*e^4 + 65*e^3 + 209*e^2 - 59*e - 108, -4*e^6 + 15*e^5 + 17*e^4 - 79*e^3 - 7*e^2 + 65*e - 9, -11*e^6 + e^5 + 80*e^4 + 11*e^3 - 147*e^2 - 48*e + 51, -7*e^6 + 5*e^5 + 33*e^4 - 29*e^3 - 7*e^2 + 38*e - 29, 3*e^6 - 2*e^5 - 7*e^4 + 4*e^3 - 25*e^2 + 21*e + 31, 3*e^6 + 3*e^5 - 28*e^4 - 19*e^3 + 71*e^2 + 31*e - 54, 3*e^6 + 3*e^5 - 29*e^4 - 15*e^3 + 93*e^2 + 11*e - 81, 12*e^6 + 5*e^5 - 101*e^4 - 34*e^3 + 240*e^2 + 36*e - 143, -e^6 + 8*e^5 + 2*e^4 - 35*e^3 + 17*e^2 + 12*e - 35, 5*e^6 - 9*e^5 - 32*e^4 + 40*e^3 + 55*e^2 - 13*e - 22, 9*e^6 - 25*e^5 - 33*e^4 + 124*e^3 - 26*e^2 - 95*e + 60, 10*e^6 + e^5 - 77*e^4 - 8*e^3 + 153*e^2 + 3*e - 65, -4*e^6 + 12*e^5 + 9*e^4 - 59*e^3 + 30*e^2 + 50*e - 31, e^6 + 9*e^5 - 7*e^4 - 45*e^3 + 8*e^2 + 23*e + 19, -2*e^6 + 7*e^5 + 11*e^4 - 32*e^3 - 19*e^2 + 8*e + 26, 3*e^6 + 3*e^5 - 13*e^4 - 26*e^3 + 3*e^2 + 50*e + 16, -4*e^6 + 11*e^5 + 16*e^4 - 47*e^3 + 10*e^2 + 4*e - 28, -26*e^6 + 9*e^5 + 181*e^4 - 38*e^3 - 340*e^2 + 18*e + 172, -e^6 + 10*e^5 - 13*e^4 - 53*e^3 + 68*e^2 + 48*e - 22, -9*e^6 - 7*e^5 + 66*e^4 + 34*e^3 - 123*e^2 - 22*e + 32, 7*e^6 - 18*e^5 - 23*e^4 + 87*e^3 - 19*e^2 - 62*e + 33, -12*e^6 + 7*e^5 + 74*e^4 - 36*e^3 - 101*e^2 + 32*e + 7, 15*e^6 - 11*e^5 - 106*e^4 + 47*e^3 + 205*e^2 - 14*e - 115, 2*e^6 + 22*e^5 - 36*e^4 - 128*e^3 + 128*e^2 + 141*e - 71, 23*e^6 - 32*e^5 - 127*e^4 + 148*e^3 + 150*e^2 - 105*e - 47, 2*e^6 + 17*e^5 - 34*e^4 - 98*e^3 + 109*e^2 + 108*e - 51, -18*e^6 + 19*e^5 + 105*e^4 - 85*e^3 - 131*e^2 + 45*e + 47, 7*e^6 - 9*e^5 - 21*e^4 + 41*e^3 - 43*e^2 - 37*e + 77]; heckeEigenvalues := AssociativeArray(); for i := 1 to #heckeEigenvaluesArray do heckeEigenvalues[primes[i]] := heckeEigenvaluesArray[i]; end for; ALEigenvalues := AssociativeArray(); ALEigenvalues[ideal] := 1; // EXAMPLE: // pp := Factorization(2*ZF)[1][1]; // heckeEigenvalues[pp]; print "To reconstruct the Hilbert newform f, type f, iso := Explode(make_newform());"; function make_newform(); M := HilbertCuspForms(F, NN); S := NewSubspace(M); // SetVerbose("ModFrmHil", 1); NFD := NewformDecomposition(S); newforms := [* Eigenform(U) : U in NFD *]; if #newforms eq 0 then; print "No Hilbert newforms at this level"; return 0; end if; print "Testing ", #newforms, " possible newforms"; newforms := [* f: f in newforms | IsIsomorphic(BaseField(f), K) *]; print #newforms, " newforms have the correct Hecke field"; if #newforms eq 0 then; print "No Hilbert newform found with the correct Hecke field"; return 0; end if; autos := Automorphisms(K); xnewforms := [* *]; for f in newforms do; if K eq RationalField() then; Append(~xnewforms, [* f, autos[1] *]); else; flag, iso := IsIsomorphic(K,BaseField(f)); for a in autos do; Append(~xnewforms, [* f, a*iso *]); end for; end if; end for; newforms := xnewforms; for P in primes do; xnewforms := [* *]; for f_iso in newforms do; f, iso := Explode(f_iso); if HeckeEigenvalue(f,P) eq iso(heckeEigenvalues[P]) then; Append(~xnewforms, f_iso); end if; end for; newforms := xnewforms; if #newforms eq 0 then; print "No Hilbert newform found which matches the Hecke eigenvalues"; return 0; else if #newforms eq 1 then; print "success: unique match"; return newforms[1]; end if; end if; end for; print #newforms, "Hilbert newforms found which match the Hecke eigenvalues"; return newforms[1]; end function;