gp: [N,k,chi] = [507,2,Mod(25,507)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
magma: //Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("507.25");
S:= CuspForms(chi, 2);
N := Newforms(S);
sage: from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(507, base_ring=CyclotomicField(26))
chi = DirichletCharacter(H, H._module([0, 3]))
N = Newforms(chi, 2, names="a")
Newform invariants
sage: traces = [168]
f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(1)] == traces)
gp: f = lf[1] \\ Warning: the index may be different
The algebraic \(q\)-expansion of this newform has not been computed, but we have computed the trace expansion .
For each embedding \(\iota_m\) of the coefficient field, the values \(\iota_m(a_n)\) are shown below.
For more information on an embedded modular form you can click on its label.
gp: mfembed(f)
Refresh table
This newform subspace can be constructed as the kernel of the linear operator
\( T_{2}^{168} - 20 T_{2}^{166} + 248 T_{2}^{164} - 26 T_{2}^{163} - 2380 T_{2}^{162} + 650 T_{2}^{161} + \cdots + 455625 \)
T2^168 - 20*T2^166 + 248*T2^164 - 26*T2^163 - 2380*T2^162 + 650*T2^161 + 20696*T2^160 - 9035*T2^159 - 169988*T2^158 + 113477*T2^157 + 1336360*T2^156 - 1236612*T2^155 - 10057580*T2^154 + 11021595*T2^153 + 73367358*T2^152 - 84939725*T2^151 - 535224805*T2^150 + 591325579*T2^149 + 3896062318*T2^148 - 3737144268*T2^147 - 28178403612*T2^146 + 22286706130*T2^145 + 199273899306*T2^144 - 132343071900*T2^143 - 1308885029675*T2^142 + 792267957273*T2^141 + 7878099751003*T2^140 - 4562058641543*T2^139 - 44086986469842*T2^138 + 25093835258011*T2^137 + 235789681537001*T2^136 - 135732397535241*T2^135 - 1229951427870020*T2^134 + 740668388694780*T2^133 + 6300549597614670*T2^132 - 3926737615187764*T2^131 - 31706289715127230*T2^130 + 19134248154440471*T2^129 + 157237590088846703*T2^128 - 86061327423795269*T2^127 - 767162789392418371*T2^126 + 368042627618609567*T2^125 + 3639737990316724252*T2^124 - 1471839151813203524*T2^123 - 16894750917244076566*T2^122 + 5839888290731650870*T2^121 + 76942261350874120464*T2^120 - 24836514652367947191*T2^119 - 330273034462923581348*T2^118 + 100124315545596518826*T2^117 + 1367448327014262464782*T2^116 - 309551533857361920579*T2^115 - 5638815289960491079725*T2^114 + 893194393341951612522*T2^113 + 23276223529189577259493*T2^112 - 2613317979685419923709*T2^111 - 93567287683475680835918*T2^110 + 7601027218464052251606*T2^109 + 364104489063240292139342*T2^108 + 2615447908853947480053*T2^107 - 1381297846500688632885023*T2^106 - 192070763998034495626585*T2^105 + 5193413413085259374920527*T2^104 + 1236293600396989281246073*T2^103 - 18676102656325281495049111*T2^102 - 5858795978757756275561294*T2^101 + 62470883165560407564285822*T2^100 + 25617560658549062958406119*T2^99 - 196834964516402638976095622*T2^98 - 114303213948785294122810445*T2^97 + 597200265163324349747428570*T2^96 + 440624094457732297239287719*T2^95 - 1685689875158943333678696383*T2^94 - 1579631216225897535840036417*T2^93 + 4630693299803301598909082351*T2^92 + 5202235860067331499224985980*T2^91 - 12209304112670466866623832823*T2^90 - 15295886490959825515779564615*T2^89 + 30601469858671638656384628772*T2^88 + 40899539800579904746861840788*T2^87 - 74603257794303445632429987424*T2^86 - 101256171517540431690205973312*T2^85 + 174613835454813263987498614278*T2^84 + 231430413389466903589843910954*T2^83 - 390158009949386451485701743323*T2^82 - 484148000518911456847825713176*T2^81 + 835996024174127838681060661942*T2^80 + 916939271540699637493751336758*T2^79 - 1720419795657799583973039949144*T2^78 - 1577860663189299091355094681443*T2^77 + 3413021682108974967345551081916*T2^76 + 2515190701335287784370016047775*T2^75 - 6421136240391645104874268288262*T2^74 - 3709599877362047278290074581434*T2^73 + 11368928337172198376350280083158*T2^72 + 5058484095960740216099849485016*T2^71 - 18858999681417676104775199313209*T2^70 - 6345875490217586053001486935876*T2^69 + 29946534803257649532198991604602*T2^68 + 8544614031499653538230903089233*T2^67 - 43846047496632741804414014342747*T2^66 - 12943610896018270010906885002728*T2^65 + 57883155325595189191561711676570*T2^64 + 22184722711806180710804158847906*T2^63 - 65960812453331446777729325785735*T2^62 - 37010127194118680235459112518439*T2^61 + 57408280680371736431747877735129*T2^60 + 48699334884285598787800331335361*T2^59 - 30907059573933549381792636530184*T2^58 - 48927315237620002209825708994019*T2^57 - 6476261840609730059281265458344*T2^56 + 23721995596455009851464329976126*T2^55 + 26233521055144839469258232258747*T2^54 + 18336279653154910900066673410611*T2^53 + 4049537711295607754943297812615*T2^52 - 16594797186227090544363574252458*T2^51 - 30228634223802255298737020037650*T2^50 - 13692781025042359236440916669626*T2^49 + 19095682816976858369331462599858*T2^48 + 22024229748590188107946484376746*T2^47 + 394812403399097242958472847131*T2^46 - 8688590567005243275541066070645*T2^45 - 4898098532307802504267297687026*T2^44 - 870659624403414661005602821760*T2^43 + 1408085789066516834331400103991*T2^42 + 1369805829787420290499084848361*T2^41 + 521396609523449049547343852814*T2^40 + 169574662821492094299995287140*T2^39 - 475083379501597071584235695092*T2^38 - 564890974784697430256823181707*T2^37 + 195691943263145248656385800666*T2^36 + 343329035090040741328374838115*T2^35 - 1789342453060929995617885280*T2^34 - 63080979015215878553826270385*T2^33 + 44729823322758330658150695327*T2^32 + 54579881597215221407465549231*T2^31 + 28376677685330962063929217088*T2^30 + 13363679265341952611569417029*T2^29 + 7444538629311521972583830979*T2^28 + 2872493912740919012703070537*T2^27 + 2414342217690842941525187119*T2^26 + 4181995557884474707647131160*T2^25 + 5332889714986303766939575457*T2^24 + 4473377873186931013286876674*T2^23 + 3212476110925558009674855398*T2^22 + 1991090337092459161133920735*T2^21 + 1084597389202875424497853183*T2^20 + 515419852048566533918102331*T2^19 + 214918196447891214044065760*T2^18 + 79202866398974368243251994*T2^17 + 25923847568657687369982457*T2^16 + 7376634805708703297714302*T2^15 + 1733659113734720705493191*T2^14 + 309773972203683840191313*T2^13 + 36067802821025704499509*T2^12 + 1220191458874880517285*T2^11 - 416438850581543644322*T2^10 - 80913950187914283388*T2^9 - 5026477345264492987*T2^8 + 257722787941797464*T2^7 + 58853912960640386*T2^6 + 1660495902731016*T2^5 - 105610025885967*T2^4 - 5294728325835*T2^3 + 182488358700*T2^2 - 528737625*T2 + 455625
acting on \(S_{2}^{\mathrm{new}}(507, [\chi])\).