/* 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, -9, 2, 11, -5, -2, 1]; F := NumberField(g); ZF := Integers(F); NN := ideal; primesArray := [ [13, 13, 3*w^5 - 2*w^4 - 17*w^3 + 10*w^2 + 16*w - 3], [13, 13, w^5 - w^4 - 5*w^3 + 5*w^2 + 3*w - 3], [13, 13, 2*w^5 - w^4 - 12*w^3 + 4*w^2 + 13*w], [13, 13, -w^2 + 3], [41, 41, -2*w^5 + w^4 + 11*w^3 - 4*w^2 - 10*w - 1], [41, 41, -4*w^5 + 3*w^4 + 23*w^3 - 14*w^2 - 22*w + 4], [41, 41, w^5 - 6*w^3 + w^2 + 7*w - 2], [41, 41, -3*w^5 + w^4 + 18*w^3 - 4*w^2 - 20*w - 1], [43, 43, 3*w^5 - 2*w^4 - 17*w^3 + 11*w^2 + 16*w - 6], [43, 43, -2*w^5 + w^4 + 12*w^3 - 6*w^2 - 14*w + 5], [49, 7, 2*w^5 - w^4 - 12*w^3 + 5*w^2 + 13*w - 4], [64, 2, -2], [71, 71, -2*w^5 + w^4 + 12*w^3 - 4*w^2 - 12*w - 1], [71, 71, -3*w^5 + 2*w^4 + 17*w^3 - 9*w^2 - 15*w], [83, 83, 4*w^5 - 2*w^4 - 24*w^3 + 9*w^2 + 26*w - 1], [83, 83, -4*w^5 + 2*w^4 + 23*w^3 - 9*w^2 - 23*w], [97, 97, -w^5 + 7*w^3 + w^2 - 11*w - 3], [97, 97, -2*w^5 + w^4 + 11*w^3 - 6*w^2 - 9*w + 3], [113, 113, -4*w^5 + 2*w^4 + 24*w^3 - 9*w^2 - 27*w + 2], [113, 113, 3*w^5 - 2*w^4 - 18*w^3 + 10*w^2 + 20*w - 6], [113, 113, -2*w^5 + w^4 + 12*w^3 - 5*w^2 - 12*w + 3], [113, 113, 3*w^5 - w^4 - 18*w^3 + 4*w^2 + 20*w], [127, 127, -w^5 + w^4 + 6*w^3 - 5*w^2 - 7*w], [127, 127, -2*w^5 + w^4 + 11*w^3 - 4*w^2 - 10*w - 2], [127, 127, -4*w^5 + 3*w^4 + 23*w^3 - 14*w^2 - 22*w + 5], [127, 127, -8*w^5 + 5*w^4 + 46*w^3 - 23*w^2 - 45*w + 4], [139, 139, w^3 + w^2 - 4*w - 1], [139, 139, 5*w^5 - 2*w^4 - 29*w^3 + 9*w^2 + 29*w + 1], [139, 139, -w^5 + w^4 + 5*w^3 - 6*w^2 - 2*w + 5], [139, 139, w^5 - 6*w^3 + 5*w + 2], [167, 167, w^4 - 4*w^2 + 1], [167, 167, -3*w^5 + w^4 + 18*w^3 - 4*w^2 - 21*w - 1], [169, 13, -3*w^5 + w^4 + 18*w^3 - 5*w^2 - 20*w], [181, 181, -w^4 + w^3 + 5*w^2 - 3*w - 3], [181, 181, -5*w^5 + 3*w^4 + 29*w^3 - 15*w^2 - 30*w + 6], [181, 181, -w^5 + w^4 + 5*w^3 - 6*w^2 - 2*w + 4], [181, 181, w^3 + w^2 - 4*w - 2], [197, 197, w^5 - w^4 - 6*w^3 + 4*w^2 + 6*w + 2], [197, 197, -4*w^5 + 2*w^4 + 24*w^3 - 9*w^2 - 26*w + 4], [197, 197, -2*w^5 + 2*w^4 + 12*w^3 - 11*w^2 - 12*w + 5], [197, 197, 2*w^5 - w^4 - 12*w^3 + 6*w^2 + 13*w - 7], [197, 197, w^5 - 6*w^3 - w^2 + 7*w + 1], [197, 197, -4*w^5 + 3*w^4 + 24*w^3 - 14*w^2 - 25*w + 2], [211, 211, 2*w^5 - w^4 - 13*w^3 + 5*w^2 + 18*w - 1], [211, 211, -2*w^5 + w^4 + 12*w^3 - 4*w^2 - 12*w - 4], [223, 223, 4*w^5 - w^4 - 23*w^3 + 5*w^2 + 24*w - 1], [223, 223, -3*w^5 + w^4 + 17*w^3 - 4*w^2 - 15*w - 4], [223, 223, 3*w^5 - 3*w^4 - 16*w^3 + 15*w^2 + 11*w - 5], [223, 223, 3*w^5 - 3*w^4 - 16*w^3 + 14*w^2 + 13*w - 5], [239, 239, -w^5 + w^4 + 6*w^3 - 6*w^2 - 7*w + 4], [239, 239, 2*w^5 - w^4 - 12*w^3 + 4*w^2 + 12*w + 2], [251, 251, 3*w^5 - 3*w^4 - 16*w^3 + 14*w^2 + 13*w - 4], [251, 251, 5*w^5 - 3*w^4 - 29*w^3 + 14*w^2 + 28*w - 1], [251, 251, 6*w^5 - 4*w^4 - 35*w^3 + 19*w^2 + 37*w - 7], [251, 251, -8*w^5 + 5*w^4 + 46*w^3 - 24*w^2 - 46*w + 8], [281, 281, -6*w^5 + 4*w^4 + 35*w^3 - 18*w^2 - 35*w + 3], [281, 281, 3*w^5 - 3*w^4 - 17*w^3 + 15*w^2 + 16*w - 10], [281, 281, -3*w^5 + w^4 + 17*w^3 - 5*w^2 - 18*w + 3], [281, 281, 5*w^5 - 3*w^4 - 30*w^3 + 14*w^2 + 33*w - 5], [293, 293, -w^5 + w^4 + 6*w^3 - 5*w^2 - 8*w + 3], [307, 307, 5*w^5 - 3*w^4 - 30*w^3 + 13*w^2 + 32*w], [307, 307, -4*w^5 + 3*w^4 + 22*w^3 - 15*w^2 - 20*w + 5], [307, 307, 3*w^5 - 2*w^4 - 17*w^3 + 8*w^2 + 15*w], [307, 307, -2*w^5 + w^4 + 12*w^3 - 5*w^2 - 11*w - 1], [307, 307, 5*w^5 - 4*w^4 - 28*w^3 + 20*w^2 + 26*w - 10], [307, 307, -4*w^5 + 2*w^4 + 23*w^3 - 8*w^2 - 22*w - 3], [337, 337, -w^5 + w^4 + 5*w^3 - 4*w^2 - 3*w + 3], [337, 337, 5*w^5 - 3*w^4 - 29*w^3 + 14*w^2 + 29*w], [337, 337, 5*w^5 - 3*w^4 - 28*w^3 + 15*w^2 + 27*w - 5], [337, 337, -4*w^5 + 4*w^4 + 22*w^3 - 20*w^2 - 19*w + 10], [349, 349, -8*w^5 + 5*w^4 + 46*w^3 - 25*w^2 - 45*w + 9], [349, 349, -w^4 + 2*w^3 + 5*w^2 - 7*w - 3], [419, 419, 5*w^5 - 3*w^4 - 29*w^3 + 13*w^2 + 28*w - 1], [419, 419, -6*w^5 + 4*w^4 + 35*w^3 - 20*w^2 - 35*w + 10], [421, 421, -6*w^5 + 3*w^4 + 34*w^3 - 15*w^2 - 32*w + 3], [421, 421, -5*w^5 + 3*w^4 + 29*w^3 - 14*w^2 - 28*w], [421, 421, w^5 - 5*w^3 - w^2 + 2*w + 3], [421, 421, -6*w^5 + 3*w^4 + 35*w^3 - 14*w^2 - 37*w + 2], [433, 433, -4*w^5 + 4*w^4 + 22*w^3 - 19*w^2 - 19*w + 6], [433, 433, 7*w^5 - 4*w^4 - 40*w^3 + 19*w^2 + 40*w - 6], [449, 449, 2*w^4 - w^3 - 10*w^2 + 4*w + 6], [449, 449, -4*w^5 + 4*w^4 + 23*w^3 - 20*w^2 - 21*w + 10], [461, 461, -6*w^5 + 3*w^4 + 36*w^3 - 15*w^2 - 40*w + 4], [461, 461, -7*w^5 + 5*w^4 + 40*w^3 - 23*w^2 - 39*w + 6], [461, 461, 4*w^5 - 2*w^4 - 22*w^3 + 9*w^2 + 19*w + 1], [461, 461, 5*w^5 - 2*w^4 - 30*w^3 + 10*w^2 + 32*w - 1], [463, 463, 4*w^5 - 2*w^4 - 23*w^3 + 10*w^2 + 23*w], [463, 463, -6*w^5 + 4*w^4 + 35*w^3 - 20*w^2 - 34*w + 7], [491, 491, 7*w^5 - 5*w^4 - 41*w^3 + 24*w^2 + 41*w - 8], [491, 491, -2*w^5 + w^4 + 12*w^3 - 4*w^2 - 15*w - 2], [491, 491, -w^5 + 6*w^3 + w^2 - 7*w], [491, 491, w^5 - w^4 - 6*w^3 + 4*w^2 + 6*w + 3], [491, 491, 5*w^5 - 3*w^4 - 29*w^3 + 16*w^2 + 30*w - 9], [491, 491, -3*w^5 + 2*w^4 + 18*w^3 - 8*w^2 - 20*w - 2], [503, 503, 3*w^5 - 2*w^4 - 18*w^3 + 10*w^2 + 20*w - 7], [503, 503, 6*w^5 - 3*w^4 - 35*w^3 + 14*w^2 + 37*w - 3], [547, 547, 2*w^5 - 12*w^3 - w^2 + 15*w + 3], [547, 547, -w^5 + 2*w^4 + 6*w^3 - 9*w^2 - 6*w + 3], [547, 547, 7*w^5 - 4*w^4 - 41*w^3 + 19*w^2 + 41*w - 3], [547, 547, 2*w^5 - w^4 - 13*w^3 + 6*w^2 + 17*w - 3], [547, 547, -4*w^5 + 3*w^4 + 23*w^3 - 13*w^2 - 21*w], [547, 547, -7*w^5 + 4*w^4 + 41*w^3 - 20*w^2 - 43*w + 7], [587, 587, 2*w^4 - w^3 - 10*w^2 + 4*w + 7], [587, 587, 5*w^5 - 2*w^4 - 29*w^3 + 10*w^2 + 31*w - 2], [601, 601, w^3 + 2*w^2 - 4*w - 4], [601, 601, w^5 - 7*w^3 - 2*w^2 + 11*w + 5], [617, 617, -7*w^5 + 4*w^4 + 41*w^3 - 20*w^2 - 43*w + 9], [617, 617, -2*w^5 + 13*w^3 - 16*w], [643, 643, -2*w^5 + 2*w^4 + 12*w^3 - 8*w^2 - 13*w], [643, 643, -3*w^5 + w^4 + 18*w^3 - 3*w^2 - 21*w - 3], [659, 659, 5*w^5 - 2*w^4 - 30*w^3 + 8*w^2 + 33*w + 2], [659, 659, w^5 - 6*w^3 + 2*w^2 + 7*w - 4], [673, 673, -2*w^5 + 2*w^4 + 10*w^3 - 11*w^2 - 5*w + 6], [673, 673, 6*w^5 - 4*w^4 - 34*w^3 + 20*w^2 + 33*w - 9], [673, 673, -3*w^5 + 2*w^4 + 17*w^3 - 9*w^2 - 16*w + 5], [673, 673, 7*w^5 - 4*w^4 - 40*w^3 + 20*w^2 + 38*w - 6], [673, 673, -3*w^5 + 2*w^4 + 16*w^3 - 11*w^2 - 12*w + 6], [673, 673, w^5 + w^4 - 6*w^3 - 6*w^2 + 8*w + 5], [701, 701, 5*w^5 - 4*w^4 - 28*w^3 + 20*w^2 + 26*w - 9], [701, 701, 4*w^5 - 3*w^4 - 22*w^3 + 15*w^2 + 20*w - 6], [727, 727, -2*w^5 + 2*w^4 + 11*w^3 - 8*w^2 - 9*w - 2], [727, 727, -3*w^5 + 3*w^4 + 18*w^3 - 15*w^2 - 20*w + 9], [729, 3, -3], [743, 743, -3*w^5 + w^4 + 18*w^3 - 4*w^2 - 22*w], [743, 743, -5*w^5 + 2*w^4 + 29*w^3 - 9*w^2 - 31*w - 1], [743, 743, -5*w^5 + 3*w^4 + 29*w^3 - 14*w^2 - 31*w + 6], [743, 743, -3*w^5 + 3*w^4 + 17*w^3 - 14*w^2 - 17*w + 3], [757, 757, -6*w^5 + 3*w^4 + 35*w^3 - 13*w^2 - 37*w + 2], [757, 757, 3*w^5 - 3*w^4 - 17*w^3 + 13*w^2 + 16*w - 1], [757, 757, -8*w^5 + 5*w^4 + 47*w^3 - 25*w^2 - 48*w + 10], [757, 757, 4*w^5 - 2*w^4 - 25*w^3 + 10*w^2 + 29*w - 4], [797, 797, -6*w^5 + 4*w^4 + 35*w^3 - 19*w^2 - 34*w + 3], [797, 797, -w^5 + w^4 + 7*w^3 - 6*w^2 - 10*w + 3], [811, 811, 5*w^5 - 4*w^4 - 28*w^3 + 18*w^2 + 25*w - 4], [811, 811, -4*w^5 + 3*w^4 + 22*w^3 - 15*w^2 - 17*w + 7], [827, 827, w^5 - w^4 - 5*w^3 + 5*w^2 + w - 4], [827, 827, -6*w^5 + 3*w^4 + 36*w^3 - 14*w^2 - 39*w + 3], [827, 827, -6*w^5 + 3*w^4 + 36*w^3 - 14*w^2 - 39*w + 2], [827, 827, -w^5 - w^4 + 7*w^3 + 6*w^2 - 11*w - 4], [839, 839, -2*w^5 + 2*w^4 + 10*w^3 - 10*w^2 - 6*w + 7], [839, 839, -6*w^5 + 4*w^4 + 34*w^3 - 20*w^2 - 32*w + 5], [841, 29, -4*w^5 + 3*w^4 + 24*w^3 - 15*w^2 - 25*w + 7], [841, 29, 5*w^5 - 3*w^4 - 30*w^3 + 15*w^2 + 32*w - 6], [841, 29, 5*w^5 - 2*w^4 - 30*w^3 + 10*w^2 + 33*w - 2], [853, 853, -5*w^5 + 3*w^4 + 29*w^3 - 16*w^2 - 29*w + 9], [853, 853, -5*w^5 + 3*w^4 + 29*w^3 - 16*w^2 - 30*w + 7], [881, 881, -3*w^5 + 3*w^4 + 16*w^3 - 14*w^2 - 13*w + 3], [881, 881, 4*w^5 - 2*w^4 - 24*w^3 + 9*w^2 + 25*w + 2], [881, 881, -8*w^5 + 5*w^4 + 46*w^3 - 24*w^2 - 46*w + 9], [881, 881, 5*w^5 - 2*w^4 - 30*w^3 + 8*w^2 + 34*w + 2], [883, 883, 3*w^5 - w^4 - 17*w^3 + 6*w^2 + 16*w - 5], [883, 883, 7*w^5 - 5*w^4 - 40*w^3 + 24*w^2 + 37*w - 8], [911, 911, w^5 - 8*w^3 + 14*w], [911, 911, -3*w^5 + 2*w^4 + 17*w^3 - 9*w^2 - 17*w - 1], [911, 911, -8*w^5 + 5*w^4 + 46*w^3 - 25*w^2 - 44*w + 9], [911, 911, 2*w^5 - 2*w^4 - 12*w^3 + 9*w^2 + 11*w], [937, 937, 5*w^5 - 2*w^4 - 30*w^3 + 9*w^2 + 32*w - 1], [937, 937, 3*w^5 - 3*w^4 - 17*w^3 + 15*w^2 + 15*w - 4], [967, 967, -w^5 + 7*w^3 - 9*w + 2], [967, 967, 6*w^5 - 4*w^4 - 35*w^3 + 20*w^2 + 36*w - 11]]; primes := [ideal : I in primesArray]; heckePol := x^3 + 3*x^2 - 6*x - 17; K := NumberField(heckePol); heckeEigenvaluesArray := [-4/3*e^2 - 5/3*e + 26/3, 4/3*e^2 + 2/3*e - 29/3, e^2 + e - 9, e, 5/3*e^2 - 2/3*e - 46/3, 1, -5/3*e^2 - 4/3*e + 16/3, 5/3*e^2 + 7/3*e - 31/3, -7/3*e^2 - 8/3*e + 38/3, -5/3*e^2 + 2/3*e + 28/3, -8/3*e^2 - 1/3*e + 58/3, -4*e^2 - 3*e + 18, -5/3*e^2 - 4/3*e + 7/3, -2/3*e^2 - 13/3*e + 7/3, -e^2 + 2*e + 1, 4*e^2 - e - 35, 5/3*e^2 - 2/3*e - 55/3, -11/3*e^2 - 4/3*e + 76/3, 16/3*e^2 + 17/3*e - 92/3, 5/3*e^2 - 8/3*e - 40/3, 10/3*e^2 - 1/3*e - 68/3, 11/3*e^2 + 13/3*e - 73/3, 5/3*e^2 + 22/3*e - 22/3, -6*e - 3, 2*e - 8, -6*e^2 - 2*e + 39, -8/3*e^2 + 8/3*e + 67/3, 16/3*e^2 + 14/3*e - 110/3, -e + 3, -13/3*e^2 + 1/3*e + 95/3, 13/3*e^2 + 20/3*e - 83/3, -1/3*e^2 + 13/3*e + 26/3, e^2 - 5*e - 15, 2*e^2 + 2*e - 4, 11/3*e^2 + 16/3*e - 49/3, 7/3*e^2 - 4/3*e - 104/3, -6*e^2 - 7*e + 32, 10/3*e^2 - 7/3*e - 98/3, -8*e - 7, 3*e^2 - e - 31, -7*e^2 - e + 54, -e^2 - 4*e + 5, 17/3*e^2 + 10/3*e - 109/3, 2*e^2 - 3*e - 23, -2/3*e^2 + 2/3*e - 11/3, 17/3*e^2 + 19/3*e - 91/3, 5*e^2 - e - 53, 23/3*e^2 + 13/3*e - 127/3, e^2 - e - 17, -1/3*e^2 - 8/3*e - 10/3, -8/3*e^2 - 10/3*e + 40/3, 5/3*e^2 + 13/3*e - 64/3, 2*e^2 + 6*e - 3, 4*e^2 - e - 38, 2*e^2 - 5*e - 28, -19/3*e^2 + 16/3*e + 164/3, -9, -2/3*e^2 - 7/3*e + 61/3, 20/3*e^2 + 19/3*e - 112/3, -2*e^2 + 7*e + 24, -13/3*e^2 - 14/3*e + 131/3, 20/3*e^2 + 1/3*e - 106/3, -14/3*e^2 + 8/3*e + 160/3, -1/3*e^2 + 13/3*e - 1/3, 5*e^2 + e - 16, e^2 - 4*e - 3, -7*e^2 - 7*e + 54, 4/3*e^2 + 20/3*e + 4/3, 2*e^2 + e - 37, 1/3*e^2 + 26/3*e - 2/3, -1/3*e^2 - 5/3*e - 61/3, 7/3*e^2 + 17/3*e + 10/3, 5*e^2 + 4*e - 28, -9*e^2 - 11*e + 48, -17/3*e^2 - 28/3*e + 61/3, -26/3*e^2 - 1/3*e + 232/3, -5*e^2 + e + 40, e + 14, 4/3*e^2 + 23/3*e - 56/3, 3*e^2 + 5*e - 32, -17/3*e^2 - 28/3*e + 61/3, 17/3*e^2 - 11/3*e - 163/3, -26/3*e^2 - 28/3*e + 178/3, -29/3*e^2 - 19/3*e + 181/3, 5/3*e^2 - 5/3*e - 91/3, 23/3*e^2 + 19/3*e - 157/3, -1/3*e^2 - 11/3*e - 31/3, -5/3*e^2 - 10/3*e + 40/3, -17/3*e^2 - 4/3*e + 202/3, 10*e^2 + 4*e - 77, 5/3*e^2 + 4/3*e - 118/3, -10/3*e^2 + 4/3*e + 131/3, -5*e^2 - e + 16, -3*e^2 - 6*e + 13, 32/3*e^2 + 1/3*e - 229/3, 41/3*e^2 + 37/3*e - 247/3, 11/3*e^2 + 43/3*e - 52/3, -9*e^2 + 4*e + 77, -e^2 + 3*e + 18, -7/3*e^2 + 19/3*e + 41/3, -26/3*e^2 - 13/3*e + 163/3, 4*e^2 - 10*e - 30, -38/3*e^2 - 34/3*e + 199/3, -7/3*e^2 + 22/3*e + 113/3, -16/3*e^2 + 1/3*e + 194/3, -10*e^2 - 18*e + 54, 18*e^2 + 14*e - 101, -47/3*e^2 - 4/3*e + 364/3, -7*e^2 - 2*e + 36, 4*e^2 + 7*e + 5, -1/3*e^2 - 26/3*e - 37/3, 26/3*e^2 + 7/3*e - 208/3, -25/3*e^2 - 17/3*e + 146/3, -10/3*e^2 - 17/3*e - 19/3, 13/3*e^2 - 19/3*e - 134/3, -4*e^2 + 11*e + 29, 4/3*e^2 - 13/3*e + 25/3, -40/3*e^2 - 8/3*e + 281/3, 4*e^2 + 4*e - 18, -41/3*e^2 - 49/3*e + 226/3, 17/3*e^2 - 11/3*e - 145/3, -25/3*e^2 - 41/3*e + 95/3, 5*e^2 + 8*e - 35, 35/3*e^2 + 34/3*e - 208/3, -23/3*e^2 + 17/3*e + 175/3, 14*e^2 + 6*e - 86, 6*e^2 - 72, 17/3*e^2 + 49/3*e - 67/3, -7*e^2 - 9*e + 41, 1/3*e^2 - 4/3*e + 7/3, -13/3*e^2 - 26/3*e + 104/3, -8/3*e^2 - 25/3*e + 46/3, -7*e^2 + 5*e + 65, -5*e^2 + 11*e + 51, 13*e^2 + 10*e - 89, -6*e^2 - 7*e + 17, 22/3*e^2 + 41/3*e - 134/3, -6*e^2 + 3*e + 82, 37/3*e^2 + 29/3*e - 233/3, -1/3*e^2 - 17/3*e - 70/3, -4/3*e^2 - 11/3*e + 53/3, 20/3*e^2 + 13/3*e - 190/3, -32/3*e^2 - 22/3*e + 214/3, e + 20, -9*e^2 - 5*e + 50, -7*e^2 + 17, 41/3*e^2 + 40/3*e - 193/3, -22/3*e^2 - 26/3*e + 131/3, 2*e^2 + 5*e + 15, 1/3*e^2 - 34/3*e - 71/3, -22/3*e^2 + 7/3*e + 95/3, -32/3*e^2 - 31/3*e + 166/3, 4*e^2 + 14*e - 15, 17/3*e^2 + 13/3*e - 46/3, 17/3*e^2 + 1/3*e - 214/3, -41/3*e^2 - 28/3*e + 238/3, 2/3*e^2 - 20/3*e + 5/3, 7*e^2 + 4*e - 81, 10*e^2 - 8*e - 86, 10/3*e^2 + 29/3*e - 104/3]; 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;