/* 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![1, -5, 2, 8, -4, -2, 1]; F := NumberField(g); ZF := Integers(F); NN := ideal; primesArray := [ [9, 3, -w^2 + 2], [19, 19, -w^3 + 4*w], [19, 19, w^3 - 3*w - 1], [29, 29, w^5 - w^4 - 6*w^3 + 4*w^2 + 8*w - 3], [29, 29, w^4 - w^3 - 4*w^2 + 2*w + 2], [31, 31, -w^4 + 4*w^2 + w - 3], [41, 41, 2*w^5 - 2*w^4 - 10*w^3 + 7*w^2 + 11*w - 4], [49, 7, -2*w^5 + 3*w^4 + 10*w^3 - 12*w^2 - 11*w + 6], [59, 59, w^5 - 2*w^4 - 5*w^3 + 8*w^2 + 7*w - 5], [59, 59, w^5 - w^4 - 4*w^3 + 3*w^2 + 3*w - 3], [59, 59, 2*w^5 - 3*w^4 - 9*w^3 + 11*w^2 + 9*w - 4], [61, 61, -w^5 + w^4 + 5*w^3 - 3*w^2 - 7*w + 1], [64, 2, -2], [71, 71, -2*w^5 + 2*w^4 + 10*w^3 - 8*w^2 - 11*w + 6], [79, 79, -3*w^5 + 4*w^4 + 13*w^3 - 14*w^2 - 9*w + 5], [79, 79, -w^4 - w^3 + 5*w^2 + 4*w - 3], [79, 79, -2*w^5 + 2*w^4 + 9*w^3 - 7*w^2 - 8*w + 4], [81, 3, 3*w^5 - 5*w^4 - 14*w^3 + 19*w^2 + 13*w - 8], [89, 89, 2*w^5 - 2*w^4 - 9*w^3 + 6*w^2 + 8*w - 1], [101, 101, -w^4 - w^3 + 5*w^2 + 3*w - 3], [101, 101, -w^5 + 2*w^4 + 6*w^3 - 8*w^2 - 9*w + 4], [109, 109, -2*w^5 + 4*w^4 + 8*w^3 - 14*w^2 - 6*w + 5], [109, 109, -3*w^5 + 4*w^4 + 13*w^3 - 14*w^2 - 10*w + 7], [125, 5, w^5 - w^4 - 5*w^3 + 4*w^2 + 5*w], [131, 131, -w^2 - w + 3], [131, 131, w^5 - 3*w^4 - 4*w^3 + 11*w^2 + 3*w - 4], [131, 131, w^5 - 2*w^4 - 5*w^3 + 9*w^2 + 6*w - 5], [131, 131, -2*w^5 + 4*w^4 + 8*w^3 - 15*w^2 - 6*w + 7], [139, 139, w^4 - 3*w^3 - 3*w^2 + 9*w], [149, 149, 2*w^5 - 3*w^4 - 9*w^3 + 12*w^2 + 7*w - 5], [149, 149, w^5 - 2*w^4 - 4*w^3 + 8*w^2 + 2*w - 2], [151, 151, 3*w^5 - 4*w^4 - 13*w^3 + 14*w^2 + 10*w - 5], [151, 151, -3*w^5 + 4*w^4 + 14*w^3 - 15*w^2 - 12*w + 6], [151, 151, 4*w^5 - 5*w^4 - 18*w^3 + 18*w^2 + 15*w - 9], [151, 151, 2*w^5 - 2*w^4 - 9*w^3 + 7*w^2 + 8*w - 5], [169, 13, -2*w^5 + w^4 + 11*w^3 - 3*w^2 - 13*w + 1], [179, 179, w^3 - w^2 - 2*w + 3], [181, 181, w^5 - 2*w^4 - 6*w^3 + 7*w^2 + 10*w - 3], [181, 181, -2*w^4 + w^3 + 8*w^2 - 3*w - 2], [191, 191, w^5 - w^4 - 6*w^3 + 5*w^2 + 9*w - 4], [191, 191, -w^3 + 2*w^2 + 3*w - 4], [191, 191, -2*w^5 + w^4 + 11*w^3 - 3*w^2 - 12*w], [191, 191, w^4 - 2*w^3 - 4*w^2 + 7*w], [199, 199, -3*w^5 + 4*w^4 + 15*w^3 - 14*w^2 - 16*w + 6], [199, 199, -2*w^5 + 3*w^4 + 10*w^3 - 12*w^2 - 12*w + 7], [211, 211, -2*w^5 + 4*w^4 + 9*w^3 - 15*w^2 - 8*w + 5], [211, 211, -3*w^5 + 5*w^4 + 13*w^3 - 18*w^2 - 10*w + 8], [229, 229, -3*w^5 + 4*w^4 + 13*w^3 - 14*w^2 - 10*w + 6], [229, 229, w^4 - 4*w^2 - 1], [229, 229, w^5 - w^4 - 3*w^3 + 3*w^2 - 3*w - 2], [239, 239, -2*w^5 + 3*w^4 + 9*w^3 - 11*w^2 - 8*w + 8], [241, 241, w^5 - 3*w^4 - 4*w^3 + 10*w^2 + 3*w - 2], [241, 241, w^5 - w^4 - 5*w^3 + 3*w^2 + 4*w + 1], [251, 251, -3*w^5 + 3*w^4 + 15*w^3 - 10*w^2 - 17*w + 3], [271, 271, -2*w^5 + 4*w^4 + 9*w^3 - 14*w^2 - 8*w + 2], [271, 271, -2*w^5 + 3*w^4 + 8*w^3 - 9*w^2 - 4*w], [271, 271, w^5 - 2*w^4 - 3*w^3 + 7*w^2 - 2*w - 4], [289, 17, 4*w^5 - 6*w^4 - 17*w^3 + 22*w^2 + 12*w - 9], [311, 311, -2*w^5 + 3*w^4 + 7*w^3 - 9*w^2 - 3*w + 2], [331, 331, 3*w^5 - 5*w^4 - 14*w^3 + 19*w^2 + 14*w - 12], [349, 349, -4*w^5 + 6*w^4 + 18*w^3 - 21*w^2 - 17*w + 7], [349, 349, -w^4 + w^3 + 5*w^2 - 3*w - 3], [359, 359, -2*w^5 + 4*w^4 + 9*w^3 - 15*w^2 - 10*w + 9], [361, 19, 2*w^5 - 3*w^4 - 9*w^3 + 11*w^2 + 6*w - 4], [361, 19, -3*w^5 + 5*w^4 + 13*w^3 - 18*w^2 - 10*w + 9], [379, 379, -4*w^5 + 5*w^4 + 18*w^3 - 17*w^2 - 14*w + 7], [379, 379, 2*w^5 - 4*w^4 - 10*w^3 + 15*w^2 + 11*w - 5], [389, 389, -5*w^5 + 7*w^4 + 22*w^3 - 25*w^2 - 17*w + 11], [389, 389, w^5 - 3*w^4 - 3*w^3 + 12*w^2 - 2*w - 5], [401, 401, -4*w^5 + 6*w^4 + 18*w^3 - 23*w^2 - 15*w + 10], [401, 401, -w^5 + 3*w^4 + 4*w^3 - 12*w^2 - w + 4], [401, 401, 4*w^5 - 5*w^4 - 20*w^3 + 19*w^2 + 21*w - 11], [401, 401, -3*w^5 + 3*w^4 + 16*w^3 - 12*w^2 - 18*w + 6], [409, 409, -2*w^4 + 2*w^3 + 7*w^2 - 6*w - 2], [409, 409, -w^5 + 3*w^4 + 5*w^3 - 13*w^2 - 5*w + 9], [419, 419, 2*w^5 - 2*w^4 - 10*w^3 + 7*w^2 + 10*w - 6], [419, 419, -w^5 + 7*w^3 - w^2 - 10*w + 4], [419, 419, w^5 - 2*w^4 - 5*w^3 + 10*w^2 + 5*w - 9], [421, 421, 3*w^5 - 3*w^4 - 16*w^3 + 12*w^2 + 18*w - 7], [431, 431, 4*w^5 - 7*w^4 - 17*w^3 + 25*w^2 + 13*w - 10], [431, 431, -2*w^5 + 3*w^4 + 7*w^3 - 10*w^2 - w + 5], [431, 431, 4*w^5 - 6*w^4 - 19*w^3 + 23*w^2 + 17*w - 10], [439, 439, -2*w^5 + 4*w^4 + 10*w^3 - 15*w^2 - 11*w + 4], [461, 461, w^5 - 2*w^4 - 3*w^3 + 6*w^2 + 2], [461, 461, w^5 - w^4 - 5*w^3 + 5*w^2 + 6*w - 7], [479, 479, -2*w^5 + w^4 + 9*w^3 - 2*w^2 - 8*w], [479, 479, 2*w^5 - 2*w^4 - 10*w^3 + 8*w^2 + 12*w - 7], [491, 491, -3*w^5 + 3*w^4 + 14*w^3 - 12*w^2 - 12*w + 7], [491, 491, -3*w^5 + 3*w^4 + 15*w^3 - 12*w^2 - 14*w + 8], [491, 491, -2*w^2 + w + 6], [499, 499, -3*w^5 + 3*w^4 + 14*w^3 - 10*w^2 - 13*w + 6], [509, 509, -2*w^5 + 2*w^4 + 8*w^3 - 6*w^2 - 5*w], [521, 521, 3*w^5 - 4*w^4 - 14*w^3 + 15*w^2 + 15*w - 9], [521, 521, -3*w^5 + 5*w^4 + 14*w^3 - 19*w^2 - 15*w + 9], [521, 521, -4*w^5 + 5*w^4 + 18*w^3 - 17*w^2 - 16*w + 6], [529, 23, w^5 - 3*w^4 - 5*w^3 + 11*w^2 + 7*w - 5], [541, 541, -3*w^5 + 4*w^4 + 14*w^3 - 15*w^2 - 14*w + 10], [569, 569, -w^5 - w^4 + 6*w^3 + 4*w^2 - 6*w - 1], [571, 571, -2*w^4 + w^3 + 9*w^2 - 3*w - 4], [599, 599, -3*w^5 + 3*w^4 + 14*w^3 - 11*w^2 - 11*w + 4], [601, 601, w^4 - 2*w^2 - w - 2], [619, 619, 2*w^5 - 3*w^4 - 9*w^3 + 11*w^2 + 10*w - 5], [619, 619, w^5 - 3*w^4 - 4*w^3 + 12*w^2 + 3*w - 3], [619, 619, -3*w^5 + 5*w^4 + 13*w^3 - 20*w^2 - 10*w + 10], [619, 619, w^5 - 2*w^4 - 5*w^3 + 10*w^2 + 5*w - 8], [619, 619, -4*w^5 + 6*w^4 + 19*w^3 - 23*w^2 - 17*w + 11], [619, 619, -4*w^5 + 6*w^4 + 17*w^3 - 22*w^2 - 13*w + 10], [631, 631, w^5 - 3*w^4 - 5*w^3 + 13*w^2 + 5*w - 6], [641, 641, -w^3 + w^2 + 3*w - 5], [641, 641, -w^5 + 3*w^4 + 2*w^3 - 10*w^2 + 3*w + 4], [659, 659, -w^5 + 3*w^4 + 5*w^3 - 12*w^2 - 5*w + 5], [661, 661, -2*w^5 + 3*w^4 + 8*w^3 - 12*w^2 - 3*w + 8], [661, 661, 2*w^5 - 3*w^4 - 8*w^3 + 10*w^2 + 6*w - 1], [691, 691, -w^3 - w^2 + 5*w + 1], [691, 691, -3*w^5 + 4*w^4 + 13*w^3 - 13*w^2 - 10*w + 6], [691, 691, 3*w^5 - 4*w^4 - 15*w^3 + 15*w^2 + 14*w - 6], [701, 701, 3*w^5 - 6*w^4 - 13*w^3 + 23*w^2 + 10*w - 10], [701, 701, -3*w^5 + 6*w^4 + 13*w^3 - 23*w^2 - 11*w + 9], [709, 709, 3*w^5 - 6*w^4 - 13*w^3 + 22*w^2 + 11*w - 10], [709, 709, -w^5 + 5*w^3 - 4*w - 2], [709, 709, -w^5 + w^4 + 7*w^3 - 6*w^2 - 11*w + 5], [719, 719, -2*w^5 + 3*w^4 + 9*w^3 - 12*w^2 - 7*w + 4], [751, 751, w^4 + w^3 - 5*w^2 - 6*w + 4], [769, 769, 4*w^5 - 5*w^4 - 19*w^3 + 18*w^2 + 18*w - 10], [769, 769, 4*w^5 - 6*w^4 - 17*w^3 + 22*w^2 + 13*w - 11], [809, 809, w^5 - w^4 - 4*w^3 + 5*w^2 + w - 7], [809, 809, 2*w^5 - 5*w^4 - 9*w^3 + 19*w^2 + 10*w - 7], [809, 809, -w^5 + 5*w^3 + w^2 - 7*w], [809, 809, -3*w^5 + 4*w^4 + 15*w^3 - 16*w^2 - 15*w + 11], [811, 811, -2*w^5 + 4*w^4 + 8*w^3 - 13*w^2 - 6*w + 5], [811, 811, -w^5 + 3*w^4 + 3*w^3 - 9*w^2 - w], [811, 811, 2*w^5 - 4*w^4 - 9*w^3 + 16*w^2 + 10*w - 9], [811, 811, 2*w^5 - 4*w^4 - 10*w^3 + 16*w^2 + 10*w - 7], [821, 821, -w^5 + 2*w^4 + 5*w^3 - 6*w^2 - 5*w - 2], [829, 829, 3*w^5 - 5*w^4 - 13*w^3 + 19*w^2 + 12*w - 9], [839, 839, 2*w^5 - 4*w^4 - 7*w^3 + 14*w^2 + w - 6], [839, 839, 4*w^5 - 5*w^4 - 18*w^3 + 19*w^2 + 14*w - 10], [841, 29, -2*w^5 + 4*w^4 + 10*w^3 - 15*w^2 - 10*w + 5], [841, 29, -w^5 + 3*w^4 + 6*w^3 - 12*w^2 - 10*w + 6], [859, 859, 3*w^5 - 3*w^4 - 15*w^3 + 10*w^2 + 14*w - 2], [881, 881, w^5 - 2*w^4 - 6*w^3 + 7*w^2 + 10*w - 4], [911, 911, -4*w^5 + 5*w^4 + 19*w^3 - 20*w^2 - 17*w + 11], [919, 919, 2*w^5 - 3*w^4 - 10*w^3 + 13*w^2 + 9*w - 10], [929, 929, -w^5 + w^4 + 5*w^3 - 2*w^2 - 8*w - 1], [941, 941, -5*w^5 + 7*w^4 + 23*w^3 - 26*w^2 - 20*w + 11], [961, 31, -3*w^5 + 4*w^4 + 16*w^3 - 16*w^2 - 20*w + 8], [971, 971, w^5 - 5*w^3 + 5*w - 4], [991, 991, 3*w^5 - 5*w^4 - 12*w^3 + 18*w^2 + 8*w - 6], [991, 991, 3*w^5 - 5*w^4 - 14*w^3 + 18*w^2 + 12*w - 7]]; primes := [ideal : I in primesArray]; heckePol := x^4 - 2*x^3 - 27*x^2 + 40*x + 145; K := NumberField(heckePol); heckeEigenvaluesArray := [e, -4/3*e^3 - 3*e^2 + 24*e + 152/3, 2/3*e^3 + e^2 - 12*e - 43/3, -1, 5/3*e^3 + 4*e^2 - 31*e - 190/3, -e^3 - 2*e^2 + 19*e + 30, 2/3*e^3 + 2*e^2 - 12*e - 94/3, -2/3*e^3 - 2*e^2 + 12*e + 106/3, -2/3*e^3 + 12*e + 16/3, 2/3*e^3 + e^2 - 12*e - 55/3, -2/3*e^3 + 12*e + 16/3, -4/3*e^3 - 4*e^2 + 24*e + 182/3, -1/3*e^3 + 4*e + 8/3, 10/3*e^3 + 7*e^2 - 60*e - 335/3, -8/3*e^3 - 6*e^2 + 48*e + 292/3, e^2 - 2*e - 16, 4/3*e^3 + 2*e^2 - 22*e - 92/3, -2*e^3 - 4*e^2 + 34*e + 68, e^2 - 2*e - 12, 2*e^3 + 4*e^2 - 36*e - 62, -4/3*e^3 - 4*e^2 + 24*e + 170/3, 10/3*e^3 + 6*e^2 - 60*e - 302/3, 4/3*e^3 + 2*e^2 - 24*e - 122/3, 2*e - 4, 2/3*e^3 + e^2 - 10*e - 31/3, -8/3*e^3 - 6*e^2 + 46*e + 310/3, 8/3*e^3 + 6*e^2 - 48*e - 316/3, 2*e + 2, -4/3*e^3 - 2*e^2 + 24*e + 98/3, -2*e + 10, -2/3*e^3 - 2*e^2 + 14*e + 82/3, -2/3*e^3 - 2*e^2 + 10*e + 94/3, 4*e + 2, 11/3*e^3 + 6*e^2 - 65*e - 304/3, -1/3*e^3 + 7*e + 14/3, 8/3*e^3 + 6*e^2 - 49*e - 304/3, -10/3*e^3 - 8*e^2 + 61*e + 386/3, -14/3*e^3 - 10*e^2 + 84*e + 496/3, -2/3*e^3 - 2*e^2 + 13*e + 94/3, -2/3*e^3 - e^2 + 10*e + 94/3, -8/3*e^3 - 6*e^2 + 48*e + 298/3, 4*e - 2, -5/3*e^3 - 6*e^2 + 31*e + 250/3, 4*e^3 + 8*e^2 - 75*e - 126, 8/3*e^3 + 4*e^2 - 49*e - 226/3, 4/3*e^3 + 2*e^2 - 22*e - 92/3, 2/3*e^3 - 13*e + 20/3, e^3 + 4*e^2 - 21*e - 68, -5/3*e^3 - 6*e^2 + 31*e + 280/3, 2*e^3 + 5*e^2 - 38*e - 69, -8/3*e^3 - 5*e^2 + 48*e + 241/3, -8/3*e^3 - 3*e^2 + 46*e + 172/3, -4*e^3 - 10*e^2 + 72*e + 154, 2*e^3 + 4*e^2 - 36*e - 50, 2/3*e^3 + 4*e^2 - 10*e - 178/3, 5*e^3 + 12*e^2 - 91*e - 198, -10/3*e^3 - 6*e^2 + 59*e + 290/3, -2/3*e^3 - e^2 + 16*e + 28/3, -2/3*e^3 - e^2 + 6*e + 46/3, 2*e^2 - 22, 2*e^3 + 6*e^2 - 40*e - 94, 10/3*e^3 + 5*e^2 - 58*e - 266/3, -7/3*e^3 - 4*e^2 + 41*e + 182/3, 14/3*e^3 + 10*e^2 - 83*e - 478/3, 6*e^3 + 14*e^2 - 110*e - 222, -2/3*e^3 - 2*e^2 + 8*e + 142/3, -6*e^3 - 10*e^2 + 105*e + 164, -13/3*e^3 - 8*e^2 + 75*e + 362/3, 2*e^3 + 2*e^2 - 40*e - 40, 14/3*e^3 + 12*e^2 - 84*e - 598/3, 4*e^3 + 10*e^2 - 70*e - 172, 4*e^3 + 8*e^2 - 70*e - 128, 2*e^3 + 2*e^2 - 38*e - 32, 14/3*e^3 + 12*e^2 - 88*e - 568/3, -10/3*e^3 - 8*e^2 + 57*e + 452/3, -e^2 + 25, 2/3*e^3 - 16*e + 26/3, 4*e^3 + 6*e^2 - 74*e - 106, 16/3*e^3 + 10*e^2 - 97*e - 470/3, -14/3*e^3 - 9*e^2 + 86*e + 460/3, 3*e^3 + 8*e^2 - 57*e - 146, 2*e^2 - 2*e - 34, -2*e^2 + 34, 14/3*e^3 + 10*e^2 - 88*e - 460/3, -5/3*e^3 - 6*e^2 + 29*e + 280/3, 4*e^3 + 10*e^2 - 70*e - 166, -20/3*e^3 - 13*e^2 + 116*e + 664/3, 28/3*e^3 + 19*e^2 - 168*e - 929/3, -13/3*e^3 - 10*e^2 + 81*e + 476/3, -22/3*e^3 - 17*e^2 + 134*e + 764/3, 2*e^2 - 2*e - 20, 2*e^3 + 5*e^2 - 36*e - 84, -2/3*e^3 - 4*e^2 + 10*e + 166/3, 8*e^3 + 18*e^2 - 148*e - 278, -2*e^3 - 2*e^2 + 36*e + 30, -22/3*e^3 - 15*e^2 + 128*e + 755/3, -4*e^3 - 8*e^2 + 72*e + 128, 6*e^3 + 12*e^2 - 106*e - 184, -2/3*e^3 - 2*e^2 + 8*e + 124/3, 3*e^3 + 8*e^2 - 57*e - 110, -29/3*e^3 - 20*e^2 + 173*e + 994/3, -2/3*e^3 + e^2 + 14*e - 47/3, 4*e^3 + 6*e^2 - 72*e - 114, 2/3*e^3 + 5*e^2 - 12*e - 199/3, 8/3*e^3 + 6*e^2 - 48*e - 304/3, -2*e^2 + 8*e + 36, -22/3*e^3 - 18*e^2 + 136*e + 842/3, -8/3*e^3 - 4*e^2 + 46*e + 220/3, -2*e^3 - 7*e^2 + 36*e + 110, -4*e^3 - 9*e^2 + 74*e + 115, -2*e^2 - 2*e, -22/3*e^3 - 16*e^2 + 134*e + 776/3, -8/3*e^3 - 5*e^2 + 50*e + 226/3, -2/3*e^3 - 2*e^2 + 7*e + 136/3, 2*e^3 + 2*e^2 - 38*e - 28, 8/3*e^3 + 6*e^2 - 46*e - 250/3, -4*e^2 + 46, -4*e^2 + 2*e + 48, -2/3*e^3 - 4*e^2 + 16*e + 190/3, -2*e^3 - 6*e^2 + 32*e + 106, 26/3*e^3 + 18*e^2 - 150*e - 898/3, -16/3*e^3 - 13*e^2 + 98*e + 623/3, -2/3*e^3 - 4*e^2 + 10*e + 214/3, -2/3*e^3 - 2*e^2 + 10*e + 100/3, -10/3*e^3 - 6*e^2 + 64*e + 266/3, -4*e^3 - 8*e^2 + 74*e + 150, -2/3*e^3 - 3*e^2 + 10*e + 109/3, 2*e^3 + 3*e^2 - 38*e - 48, 4*e^3 + 12*e^2 - 74*e - 178, -12*e^3 - 24*e^2 + 216*e + 388, -16/3*e^3 - 14*e^2 + 92*e + 650/3, -7/3*e^3 - 6*e^2 + 37*e + 344/3, 13/3*e^3 + 14*e^2 - 79*e - 596/3, -2/3*e^3 - 2*e^2 + 10*e + 106/3, -10/3*e^3 - 8*e^2 + 64*e + 398/3, -4*e^3 - 6*e^2 + 75*e + 86, 34/3*e^3 + 20*e^2 - 198*e - 998/3, 2*e^3 + 8*e^2 - 44*e - 136, -26/3*e^3 - 15*e^2 + 160*e + 727/3, 2/3*e^3 + 6*e^2 - 16*e - 286/3, 2/3*e^3 + 2*e^2 - 19*e - 106/3, 10*e^3 + 24*e^2 - 184*e - 372, 8/3*e^3 + 2*e^2 - 48*e - 220/3, -14/3*e^3 - 14*e^2 + 82*e + 634/3, 8*e^3 + 14*e^2 - 140*e - 236, -4*e^3 - 6*e^2 + 72*e + 138, 20/3*e^3 + 18*e^2 - 122*e - 904/3, -20/3*e^3 - 18*e^2 + 122*e + 892/3, 2/3*e^3 - 2*e^2 - 18*e + 56/3]; 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;