# Properties

 Label 230.2.a.c Level $230$ Weight $2$ Character orbit 230.a Self dual yes Analytic conductor $1.837$ Analytic rank $0$ Dimension $2$ CM no Inner twists $1$

# Related objects

Show commands: Magma / PariGP / SageMath

## Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [230,2,Mod(1,230)]

mf = mfinit([N,k,chi],0)

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(230, base_ring=CyclotomicField(2))

chi = DirichletCharacter(H, H._module([0, 0]))

N = Newforms(chi, 2, names="a")

//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code

chi := DirichletCharacter("230.1");

S:= CuspForms(chi, 2);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$230 = 2 \cdot 5 \cdot 23$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 230.a (trivial)

## Newform invariants

comment: select newform

sage: f = N[0] # Warning: the index may be different

gp: f = lf[1] \\ Warning: the index may be different

 Self dual: yes Analytic conductor: $$1.83655924649$$ Analytic rank: $$0$$ Dimension: $$2$$ Coefficient field: $$\Q(\sqrt{5})$$ comment: defining polynomial  gp: f.mod \\ as an extension of the character field Defining polynomial: $$x^{2} - x - 1$$ x^2 - x - 1 Coefficient ring: $$\Z[a_1, a_2, a_3]$$ Coefficient ring index: $$1$$ Twist minimal: yes Fricke sign: $$-1$$ Sato-Tate group: $\mathrm{SU}(2)$

## $q$-expansion

comment: q-expansion

sage: f.q_expansion() # note that sage often uses an isomorphic number field

gp: mfcoefs(f, 20)

Coefficients of the $$q$$-expansion are expressed in terms of $$\beta = \frac{1}{2}(1 + \sqrt{5})$$. We also show the integral $$q$$-expansion of the trace form.

 $$f(q)$$ $$=$$ $$q + q^{2} + \beta q^{3} + q^{4} + q^{5} + \beta q^{6} + ( - \beta + 1) q^{7} + q^{8} + (\beta - 2) q^{9}+O(q^{10})$$ q + q^2 + b * q^3 + q^4 + q^5 + b * q^6 + (-b + 1) * q^7 + q^8 + (b - 2) * q^9 $$q + q^{2} + \beta q^{3} + q^{4} + q^{5} + \beta q^{6} + ( - \beta + 1) q^{7} + q^{8} + (\beta - 2) q^{9} + q^{10} + ( - 3 \beta + 2) q^{11} + \beta q^{12} + ( - 5 \beta + 1) q^{13} + ( - \beta + 1) q^{14} + \beta q^{15} + q^{16} + (5 \beta - 2) q^{17} + (\beta - 2) q^{18} + (3 \beta - 3) q^{19} + q^{20} - q^{21} + ( - 3 \beta + 2) q^{22} + q^{23} + \beta q^{24} + q^{25} + ( - 5 \beta + 1) q^{26} + ( - 4 \beta + 1) q^{27} + ( - \beta + 1) q^{28} + ( - 2 \beta - 6) q^{29} + \beta q^{30} + (5 \beta + 1) q^{31} + q^{32} + ( - \beta - 3) q^{33} + (5 \beta - 2) q^{34} + ( - \beta + 1) q^{35} + (\beta - 2) q^{36} + 4 \beta q^{37} + (3 \beta - 3) q^{38} + ( - 4 \beta - 5) q^{39} + q^{40} + (7 \beta - 8) q^{41} - q^{42} + ( - 3 \beta + 2) q^{44} + (\beta - 2) q^{45} + q^{46} + ( - 6 \beta + 6) q^{47} + \beta q^{48} + ( - \beta - 5) q^{49} + q^{50} + (3 \beta + 5) q^{51} + ( - 5 \beta + 1) q^{52} + (4 \beta - 6) q^{53} + ( - 4 \beta + 1) q^{54} + ( - 3 \beta + 2) q^{55} + ( - \beta + 1) q^{56} + 3 q^{57} + ( - 2 \beta - 6) q^{58} + (6 \beta - 8) q^{59} + \beta q^{60} + ( - 7 \beta + 2) q^{61} + (5 \beta + 1) q^{62} + (2 \beta - 3) q^{63} + q^{64} + ( - 5 \beta + 1) q^{65} + ( - \beta - 3) q^{66} + (4 \beta + 8) q^{67} + (5 \beta - 2) q^{68} + \beta q^{69} + ( - \beta + 1) q^{70} + ( - 5 \beta + 4) q^{71} + (\beta - 2) q^{72} + 2 \beta q^{73} + 4 \beta q^{74} + \beta q^{75} + (3 \beta - 3) q^{76} + ( - 2 \beta + 5) q^{77} + ( - 4 \beta - 5) q^{78} + ( - 4 \beta + 8) q^{79} + q^{80} + ( - 6 \beta + 2) q^{81} + (7 \beta - 8) q^{82} + ( - 8 \beta + 6) q^{83} - q^{84} + (5 \beta - 2) q^{85} + ( - 8 \beta - 2) q^{87} + ( - 3 \beta + 2) q^{88} + ( - 4 \beta - 4) q^{89} + (\beta - 2) q^{90} + ( - \beta + 6) q^{91} + q^{92} + (6 \beta + 5) q^{93} + ( - 6 \beta + 6) q^{94} + (3 \beta - 3) q^{95} + \beta q^{96} + ( - \beta + 14) q^{97} + ( - \beta - 5) q^{98} + (5 \beta - 7) q^{99}+O(q^{100})$$ q + q^2 + b * q^3 + q^4 + q^5 + b * q^6 + (-b + 1) * q^7 + q^8 + (b - 2) * q^9 + q^10 + (-3*b + 2) * q^11 + b * q^12 + (-5*b + 1) * q^13 + (-b + 1) * q^14 + b * q^15 + q^16 + (5*b - 2) * q^17 + (b - 2) * q^18 + (3*b - 3) * q^19 + q^20 - q^21 + (-3*b + 2) * q^22 + q^23 + b * q^24 + q^25 + (-5*b + 1) * q^26 + (-4*b + 1) * q^27 + (-b + 1) * q^28 + (-2*b - 6) * q^29 + b * q^30 + (5*b + 1) * q^31 + q^32 + (-b - 3) * q^33 + (5*b - 2) * q^34 + (-b + 1) * q^35 + (b - 2) * q^36 + 4*b * q^37 + (3*b - 3) * q^38 + (-4*b - 5) * q^39 + q^40 + (7*b - 8) * q^41 - q^42 + (-3*b + 2) * q^44 + (b - 2) * q^45 + q^46 + (-6*b + 6) * q^47 + b * q^48 + (-b - 5) * q^49 + q^50 + (3*b + 5) * q^51 + (-5*b + 1) * q^52 + (4*b - 6) * q^53 + (-4*b + 1) * q^54 + (-3*b + 2) * q^55 + (-b + 1) * q^56 + 3 * q^57 + (-2*b - 6) * q^58 + (6*b - 8) * q^59 + b * q^60 + (-7*b + 2) * q^61 + (5*b + 1) * q^62 + (2*b - 3) * q^63 + q^64 + (-5*b + 1) * q^65 + (-b - 3) * q^66 + (4*b + 8) * q^67 + (5*b - 2) * q^68 + b * q^69 + (-b + 1) * q^70 + (-5*b + 4) * q^71 + (b - 2) * q^72 + 2*b * q^73 + 4*b * q^74 + b * q^75 + (3*b - 3) * q^76 + (-2*b + 5) * q^77 + (-4*b - 5) * q^78 + (-4*b + 8) * q^79 + q^80 + (-6*b + 2) * q^81 + (7*b - 8) * q^82 + (-8*b + 6) * q^83 - q^84 + (5*b - 2) * q^85 + (-8*b - 2) * q^87 + (-3*b + 2) * q^88 + (-4*b - 4) * q^89 + (b - 2) * q^90 + (-b + 6) * q^91 + q^92 + (6*b + 5) * q^93 + (-6*b + 6) * q^94 + (3*b - 3) * q^95 + b * q^96 + (-b + 14) * q^97 + (-b - 5) * q^98 + (5*b - 7) * q^99 $$\operatorname{Tr}(f)(q)$$ $$=$$ $$2 q + 2 q^{2} + q^{3} + 2 q^{4} + 2 q^{5} + q^{6} + q^{7} + 2 q^{8} - 3 q^{9}+O(q^{10})$$ 2 * q + 2 * q^2 + q^3 + 2 * q^4 + 2 * q^5 + q^6 + q^7 + 2 * q^8 - 3 * q^9 $$2 q + 2 q^{2} + q^{3} + 2 q^{4} + 2 q^{5} + q^{6} + q^{7} + 2 q^{8} - 3 q^{9} + 2 q^{10} + q^{11} + q^{12} - 3 q^{13} + q^{14} + q^{15} + 2 q^{16} + q^{17} - 3 q^{18} - 3 q^{19} + 2 q^{20} - 2 q^{21} + q^{22} + 2 q^{23} + q^{24} + 2 q^{25} - 3 q^{26} - 2 q^{27} + q^{28} - 14 q^{29} + q^{30} + 7 q^{31} + 2 q^{32} - 7 q^{33} + q^{34} + q^{35} - 3 q^{36} + 4 q^{37} - 3 q^{38} - 14 q^{39} + 2 q^{40} - 9 q^{41} - 2 q^{42} + q^{44} - 3 q^{45} + 2 q^{46} + 6 q^{47} + q^{48} - 11 q^{49} + 2 q^{50} + 13 q^{51} - 3 q^{52} - 8 q^{53} - 2 q^{54} + q^{55} + q^{56} + 6 q^{57} - 14 q^{58} - 10 q^{59} + q^{60} - 3 q^{61} + 7 q^{62} - 4 q^{63} + 2 q^{64} - 3 q^{65} - 7 q^{66} + 20 q^{67} + q^{68} + q^{69} + q^{70} + 3 q^{71} - 3 q^{72} + 2 q^{73} + 4 q^{74} + q^{75} - 3 q^{76} + 8 q^{77} - 14 q^{78} + 12 q^{79} + 2 q^{80} - 2 q^{81} - 9 q^{82} + 4 q^{83} - 2 q^{84} + q^{85} - 12 q^{87} + q^{88} - 12 q^{89} - 3 q^{90} + 11 q^{91} + 2 q^{92} + 16 q^{93} + 6 q^{94} - 3 q^{95} + q^{96} + 27 q^{97} - 11 q^{98} - 9 q^{99}+O(q^{100})$$ 2 * q + 2 * q^2 + q^3 + 2 * q^4 + 2 * q^5 + q^6 + q^7 + 2 * q^8 - 3 * q^9 + 2 * q^10 + q^11 + q^12 - 3 * q^13 + q^14 + q^15 + 2 * q^16 + q^17 - 3 * q^18 - 3 * q^19 + 2 * q^20 - 2 * q^21 + q^22 + 2 * q^23 + q^24 + 2 * q^25 - 3 * q^26 - 2 * q^27 + q^28 - 14 * q^29 + q^30 + 7 * q^31 + 2 * q^32 - 7 * q^33 + q^34 + q^35 - 3 * q^36 + 4 * q^37 - 3 * q^38 - 14 * q^39 + 2 * q^40 - 9 * q^41 - 2 * q^42 + q^44 - 3 * q^45 + 2 * q^46 + 6 * q^47 + q^48 - 11 * q^49 + 2 * q^50 + 13 * q^51 - 3 * q^52 - 8 * q^53 - 2 * q^54 + q^55 + q^56 + 6 * q^57 - 14 * q^58 - 10 * q^59 + q^60 - 3 * q^61 + 7 * q^62 - 4 * q^63 + 2 * q^64 - 3 * q^65 - 7 * q^66 + 20 * q^67 + q^68 + q^69 + q^70 + 3 * q^71 - 3 * q^72 + 2 * q^73 + 4 * q^74 + q^75 - 3 * q^76 + 8 * q^77 - 14 * q^78 + 12 * q^79 + 2 * q^80 - 2 * q^81 - 9 * q^82 + 4 * q^83 - 2 * q^84 + q^85 - 12 * q^87 + q^88 - 12 * q^89 - 3 * q^90 + 11 * q^91 + 2 * q^92 + 16 * q^93 + 6 * q^94 - 3 * q^95 + q^96 + 27 * q^97 - 11 * q^98 - 9 * q^99

## Embeddings

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.

comment: embeddings in the coefficient field

gp: mfembed(f)

Label   $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
1.1
 −0.618034 1.61803
1.00000 −0.618034 1.00000 1.00000 −0.618034 1.61803 1.00000 −2.61803 1.00000
1.2 1.00000 1.61803 1.00000 1.00000 1.61803 −0.618034 1.00000 −0.381966 1.00000
 $$n$$: e.g. 2-40 or 990-1000 Significant digits: Format: Complex embeddings Normalized embeddings Satake parameters Satake angles

## Atkin-Lehner signs

$$p$$ Sign
$$2$$ $$-1$$
$$5$$ $$-1$$
$$23$$ $$-1$$

## Inner twists

This newform does not admit any (nontrivial) inner twists.

## Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 230.2.a.c 2
3.b odd 2 1 2070.2.a.u 2
4.b odd 2 1 1840.2.a.l 2
5.b even 2 1 1150.2.a.j 2
5.c odd 4 2 1150.2.b.i 4
8.b even 2 1 7360.2.a.bh 2
8.d odd 2 1 7360.2.a.bn 2
20.d odd 2 1 9200.2.a.bu 2
23.b odd 2 1 5290.2.a.o 2

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
230.2.a.c 2 1.a even 1 1 trivial
1150.2.a.j 2 5.b even 2 1
1150.2.b.i 4 5.c odd 4 2
1840.2.a.l 2 4.b odd 2 1
2070.2.a.u 2 3.b odd 2 1
5290.2.a.o 2 23.b odd 2 1
7360.2.a.bh 2 8.b even 2 1
7360.2.a.bn 2 8.d odd 2 1
9200.2.a.bu 2 20.d odd 2 1

## Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator $$T_{3}^{2} - T_{3} - 1$$ acting on $$S_{2}^{\mathrm{new}}(\Gamma_0(230))$$.

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$(T - 1)^{2}$$
$3$ $$T^{2} - T - 1$$
$5$ $$(T - 1)^{2}$$
$7$ $$T^{2} - T - 1$$
$11$ $$T^{2} - T - 11$$
$13$ $$T^{2} + 3T - 29$$
$17$ $$T^{2} - T - 31$$
$19$ $$T^{2} + 3T - 9$$
$23$ $$(T - 1)^{2}$$
$29$ $$T^{2} + 14T + 44$$
$31$ $$T^{2} - 7T - 19$$
$37$ $$T^{2} - 4T - 16$$
$41$ $$T^{2} + 9T - 41$$
$43$ $$T^{2}$$
$47$ $$T^{2} - 6T - 36$$
$53$ $$T^{2} + 8T - 4$$
$59$ $$T^{2} + 10T - 20$$
$61$ $$T^{2} + 3T - 59$$
$67$ $$T^{2} - 20T + 80$$
$71$ $$T^{2} - 3T - 29$$
$73$ $$T^{2} - 2T - 4$$
$79$ $$T^{2} - 12T + 16$$
$83$ $$T^{2} - 4T - 76$$
$89$ $$T^{2} + 12T + 16$$
$97$ $$T^{2} - 27T + 181$$