gp: [N,k,chi] = [925,2,Mod(18,925)]
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("925.18");
S:= CuspForms(chi, 2);
N := Newforms(S);
sage: from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(925, base_ring=CyclotomicField(36))
chi = DirichletCharacter(H, H._module([27, 17]))
N = Newforms(chi, 2, names="a")
Newform invariants
sage: traces = [204]
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
\( T_{2}^{204} - 12 T_{2}^{203} + 72 T_{2}^{202} - 304 T_{2}^{201} + 1062 T_{2}^{200} + \cdots + 11\!\cdots\!81 \)
T2^204 - 12*T2^203 + 72*T2^202 - 304*T2^201 + 1062*T2^200 - 3252*T2^199 + 10101*T2^198 - 36756*T2^197 + 138069*T2^196 - 466956*T2^195 + 1409130*T2^194 - 3816738*T2^193 + 10123004*T2^192 - 30801606*T2^191 + 102989541*T2^190 - 326526360*T2^189 + 940328805*T2^188 - 2431824144*T2^187 + 5983005123*T2^186 - 16337979420*T2^185 + 50163760338*T2^184 - 150966367350*T2^183 + 417371763705*T2^182 - 1032280535988*T2^181 + 2369633059078*T2^180 - 5889969283980*T2^179 + 16859969263995*T2^178 - 48940257376520*T2^177 + 132177331050894*T2^176 - 318305771893362*T2^175 + 695420393037961*T2^174 - 1595900288224242*T2^173 + 4266703815249573*T2^172 - 11946530043964056*T2^171 + 31580548607448897*T2^170 - 74241984652574154*T2^169 + 154941930723250715*T2^168 - 328751034515615820*T2^167 + 818355450952522572*T2^166 - 2212840166393506178*T2^165 + 5763737789596433868*T2^164 - 13349583186964148568*T2^163 + 26924583210839249518*T2^162 - 53265993480942643740*T2^161 + 122991593044640372742*T2^160 - 319566533870038102406*T2^159 + 819722017997850811137*T2^158 - 1873467510623219178822*T2^157 + 3663547511877599790403*T2^156 - 6767477588906314911330*T2^155 + 14388230290622766272346*T2^154 - 35742825966869836784796*T2^153 + 90589626937016504428701*T2^152 - 205725366314701502834808*T2^151 + 393988069444031491502133*T2^150 - 686944473093333049819236*T2^149 + 1342443597013846072053126*T2^148 - 3161223358975715219421222*T2^147 + 7892853653728766039002260*T2^146 - 17820184497914372184738312*T2^145 + 33540281050292715552269248*T2^144 - 55498716786402824487274830*T2^143 + 99323144938087737120057090*T2^142 - 219459880276493848380225248*T2^141 + 538881933034838282239718121*T2^140 - 1213925684733108610783732950*T2^139 + 2261297228935777579858775539*T2^138 - 3593573056654725848383259562*T2^137 + 5923980029319730292582013477*T2^136 - 12155737054034196686655920016*T2^135 + 29086683011794028973019953141*T2^134 - 65087372225538642919200447438*T2^133 + 119830878895121407601011663999*T2^132 - 183354989467253664555329633526*T2^131 + 278959973555764188875985486063*T2^130 - 527511253335356178294950415694*T2^129 + 1224989904964232389927018080096*T2^128 - 2724366008933984746376676847416*T2^127 + 4967439221015647548422850242788*T2^126 - 7359832566736812204175519234836*T2^125 + 10404756684230952125104920638988*T2^124 - 18013786849012890609253972583348*T2^123 + 40197571374375848247444060990375*T2^122 - 88333430023298428244530529947056*T2^121 + 158723946384424179583693658267317*T2^120 - 226745529278750730115272876285660*T2^119 + 296588373390752633748332152424619*T2^118 - 465380194358897332023461987503950*T2^117 + 994955638036925201545734466262409*T2^116 - 2168889000818138467288350445919622*T2^115 + 3851248364782902721664934103795693*T2^114 - 5323034723718527485500260598108960*T2^113 + 6469220983264060789478449916988399*T2^112 - 9129999368906226029985705867633510*T2^111 + 18482082022314694216710456315730332*T2^110 - 39787759894470921955767591260502294*T2^109 + 69446981068669948967730174625048771*T2^108 - 92130038782865924326579706028200028*T2^107 + 102556857534190178431023540644446512*T2^106 - 126522413213212551181116641924880848*T2^105 + 240838362352297853450725091321445447*T2^104 - 520516915827547542793766159845533318*T2^103 + 906013632766236583343726575289731024*T2^102 - 1169955569981886602556288545503442976*T2^101 + 1216912850021281129892915194436478381*T2^100 - 1321225268041505417261703543347382406*T2^99 + 2330026400712814959631241062165459335*T2^98 - 5028146175145838372127886797972725448*T2^97 + 8692794990168419973480629928056696704*T2^96 - 10882119076587819206008765018288911054*T2^95 + 10514405875532401380023051555814776481*T2^94 - 9756422686043418184865896202928048650*T2^93 + 15403524470619507274873647388493210121*T2^92 - 33467531700332774710630936647764434134*T2^91 + 58418413148487784315120242576599393320*T2^90 - 72462982260734279250516546144456475332*T2^89 + 67847931308636196156097485317237236401*T2^88 - 57250765516053171704587751290377572822*T2^87 + 78631460714286472603069929422945606208*T2^86 - 163354779447210947296548599642138112654*T2^85 + 282344910561907740094948102904270615687*T2^84 - 345991990149439137744031609040383017192*T2^83 + 318662778636745727196845594598972756720*T2^82 - 250702921794157044416104970391659985980*T2^81 + 275806266286595476803905777253400095402*T2^80 - 500500840758021074462443550630513468346*T2^79 + 857978180633758622714525063172905472587*T2^78 - 1093303976438147669049596412083586922260*T2^77 + 1088107539266406803203003893982778461536*T2^76 - 917415115107137329206115352349549801474*T2^75 + 854662845944045298331734817524138052782*T2^74 - 1147743993024331946830230421343695370340*T2^73 + 1739525633673236319463384009776532864467*T2^72 - 2158851513426955344730475839560438261036*T2^71 + 2155137583017582494005414085312594036244*T2^70 - 1758453939918794760887428075889918852134*T2^69 + 1339453070491988567806306333694531425569*T2^68 - 1304441237915139935687516248604025299094*T2^67 + 1793510654278519723267055866692608902216*T2^66 - 2360290511115789045114580117165461876282*T2^65 + 2685469498263420299179288153837056027276*T2^64 - 2554246127312982687221467187653866930392*T2^63 + 2092264299612772783201378192421852303709*T2^62 - 1571539411176412642224698887418181055398*T2^61 + 1277788597905525233089489088703971145196*T2^60 - 1083987795230888295962312604296479595226*T2^59 + 964730689687077227389647827194900330284*T2^58 - 798368873019695457781007931105992189652*T2^57 + 605522769688993115743596897133320382443*T2^56 - 403602028710986306395329388610923987818*T2^55 + 297121648898642472171254566465401489234*T2^54 - 223766272369392186266240603705566070196*T2^53 + 191099059911660158211511198536573439788*T2^52 - 154402472244827950267449686526987337088*T2^51 + 118152783658461032549904031472554389726*T2^50 - 73493432041609673267762799737848844058*T2^49 + 49363020727182680769322586615777655972*T2^48 - 29765121984271067716820532283338889290*T2^47 + 20906170136265908671479181198081885674*T2^46 - 13635727003334596148420383218959718190*T2^45 + 9702011578165001446211748739099915860*T2^44 - 4449451939821597943998169934528871414*T2^43 + 2580439715392880112615273368074721472*T2^42 - 1014090622078199549008669643614643022*T2^41 + 676770552770061596505955993425671982*T2^40 - 357200149231022899046906754501281064*T2^39 + 348556006532472485226489638940730044*T2^38 - 126039800294759907410529457811186232*T2^37 + 82241629234109738514905744112756032*T2^36 - 28742857772497502685623051106910146*T2^35 + 15493618931906206778796991614315330*T2^34 - 7709253047093877446016305268951854*T2^33 + 8230359506341813275527806562893308*T2^32 - 1798804529456246259651703488142056*T2^31 + 742598698395618986803150022315344*T2^30 - 372156040492696113745219176199944*T2^29 + 38174296841906452628683772409492*T2^28 + 22285598669170733466173336988918*T2^27 + 67701996546118853656396377292992*T2^26 + 17807940123531603483383178162714*T2^25 + 4039039385602645791154171287136*T2^24 - 3124297348521030527566254362826*T2^23 - 1806206002681111368214040112174*T2^22 - 324993479435497608783867811530*T2^21 + 215035687161001154996234890119*T2^20 + 133598943669294109171529999796*T2^19 + 39747063895416351321097370428*T2^18 + 1500522250587275937861890862*T2^17 - 2885283572214435516911122206*T2^16 - 1169855197954192270718856728*T2^15 - 123587075485616210124593403*T2^14 + 49111819954144428105167850*T2^13 + 35932852275342550031004241*T2^12 + 12175163622277560316969950*T2^11 + 2688357410360439423341628*T2^10 + 346850347754726547256604*T2^9 + 23146880091053274087795*T2^8 - 2434434350807384547432*T2^7 - 1153958351633924930721*T2^6 - 148526106797722685124*T2^5 + 14135728616985795912*T2^4 + 4227305122743966540*T2^3 + 46740873529441560*T2^2 - 32506991566999068*T2 + 1140953892004081
acting on \(S_{2}^{\mathrm{new}}(925, [\chi])\).