Properties

 Label 1728.2.bc.b Level $1728$ Weight $2$ Character orbit 1728.bc Analytic conductor $13.798$ Analytic rank $0$ Dimension $4$ CM no Inner twists $2$

Related objects

Newspace parameters

 Level: $$N$$ $$=$$ $$1728 = 2^{6} \cdot 3^{3}$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 1728.bc (of order $$12$$, degree $$4$$, not minimal)

Newform invariants

 Self dual: no Analytic conductor: $$13.7981494693$$ Analytic rank: $$0$$ Dimension: $$4$$ Coefficient field: $$\Q(\zeta_{12})$$ Defining polynomial: $$x^{4} - x^{2} + 1$$ Coefficient ring: $$\Z[a_1, \ldots, a_{5}]$$ Coefficient ring index: $$1$$ Twist minimal: no (minimal twist has level 144) Sato-Tate group: $\mathrm{SU}(2)[C_{12}]$

$q$-expansion

Coefficients of the $$q$$-expansion are expressed in terms of a primitive root of unity $$\zeta_{12}$$. We also show the integral $$q$$-expansion of the trace form.

 $$f(q)$$ $$=$$ $$q + ( -\zeta_{12}^{2} + \zeta_{12}^{3} ) q^{5} + ( 4 - \zeta_{12} - 2 \zeta_{12}^{2} + \zeta_{12}^{3} ) q^{7} +O(q^{10})$$ $$q + ( -\zeta_{12}^{2} + \zeta_{12}^{3} ) q^{5} + ( 4 - \zeta_{12} - 2 \zeta_{12}^{2} + \zeta_{12}^{3} ) q^{7} + ( 1 - \zeta_{12} ) q^{11} + ( 2 - 2 \zeta_{12} - 3 \zeta_{12}^{2} - \zeta_{12}^{3} ) q^{13} -4 q^{17} + ( 3 - 3 \zeta_{12}^{3} ) q^{19} + ( 2 - 3 \zeta_{12} + 2 \zeta_{12}^{2} ) q^{23} + ( -2 - 3 \zeta_{12} + \zeta_{12}^{2} + 3 \zeta_{12}^{3} ) q^{25} + ( 1 + 2 \zeta_{12} + \zeta_{12}^{2} - \zeta_{12}^{3} ) q^{29} + ( 4 - 3 \zeta_{12} - 4 \zeta_{12}^{2} + 6 \zeta_{12}^{3} ) q^{31} + ( -2 + 3 \zeta_{12} - 3 \zeta_{12}^{2} + 2 \zeta_{12}^{3} ) q^{35} + ( -5 - 2 \zeta_{12} - 2 \zeta_{12}^{2} - 5 \zeta_{12}^{3} ) q^{37} + ( -3 - 6 \zeta_{12} - 3 \zeta_{12}^{2} ) q^{41} + ( 1 + 5 \zeta_{12} - 6 \zeta_{12}^{2} - 6 \zeta_{12}^{3} ) q^{43} + ( 3 \zeta_{12} + 4 \zeta_{12}^{2} + 3 \zeta_{12}^{3} ) q^{47} + ( 6 - 4 \zeta_{12} - 6 \zeta_{12}^{2} + 8 \zeta_{12}^{3} ) q^{49} + ( -5 + 2 \zeta_{12} + 2 \zeta_{12}^{2} - 5 \zeta_{12}^{3} ) q^{53} + ( 1 - 2 \zeta_{12}^{2} + 2 \zeta_{12}^{3} ) q^{55} + ( 3 + 3 \zeta_{12} - 3 \zeta_{12}^{3} ) q^{59} + ( 7 + 8 \zeta_{12} + \zeta_{12}^{2} - \zeta_{12}^{3} ) q^{61} + ( 2 \zeta_{12} - \zeta_{12}^{2} + 2 \zeta_{12}^{3} ) q^{65} + ( -5 + 5 \zeta_{12} + 2 \zeta_{12}^{2} - 3 \zeta_{12}^{3} ) q^{67} + ( 4 - 8 \zeta_{12}^{2} - 4 \zeta_{12}^{3} ) q^{71} + ( -2 + 4 \zeta_{12}^{2} - 4 \zeta_{12}^{3} ) q^{73} + ( 5 - 5 \zeta_{12} - 2 \zeta_{12}^{2} + 3 \zeta_{12}^{3} ) q^{77} + ( -\zeta_{12} - \zeta_{12}^{3} ) q^{79} + ( 1 - 9 \zeta_{12} - 10 \zeta_{12}^{2} + 10 \zeta_{12}^{3} ) q^{83} + ( 4 \zeta_{12}^{2} - 4 \zeta_{12}^{3} ) q^{85} + ( 8 - 16 \zeta_{12}^{2} + 2 \zeta_{12}^{3} ) q^{89} + ( 4 - 9 \zeta_{12} - 9 \zeta_{12}^{2} + 4 \zeta_{12}^{3} ) q^{91} + ( 3 - 3 \zeta_{12} - 3 \zeta_{12}^{2} + 6 \zeta_{12}^{3} ) q^{95} -\zeta_{12}^{2} q^{97} +O(q^{100})$$ $$\operatorname{Tr}(f)(q)$$ $$=$$ $$4q - 2q^{5} + 12q^{7} + O(q^{10})$$ $$4q - 2q^{5} + 12q^{7} + 4q^{11} + 2q^{13} - 16q^{17} + 12q^{19} + 12q^{23} - 6q^{25} + 6q^{29} + 8q^{31} - 14q^{35} - 24q^{37} - 18q^{41} - 8q^{43} + 8q^{47} + 12q^{49} - 16q^{53} + 12q^{59} + 30q^{61} - 2q^{65} - 16q^{67} + 16q^{77} - 16q^{83} + 8q^{85} - 2q^{91} + 6q^{95} - 2q^{97} + O(q^{100})$$

Character values

We give the values of $$\chi$$ on generators for $$\left(\mathbb{Z}/1728\mathbb{Z}\right)^\times$$.

 $$n$$ $$325$$ $$703$$ $$1217$$ $$\chi(n)$$ $$\zeta_{12}^{3}$$ $$1$$ $$-1 + \zeta_{12}^{2}$$

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.

Label $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
145.1
 −0.866025 − 0.500000i 0.866025 − 0.500000i 0.866025 + 0.500000i −0.866025 + 0.500000i
0 0 0 −0.500000 1.86603i 0 3.86603 2.23205i 0 0 0
721.1 0 0 0 −0.500000 0.133975i 0 2.13397 + 1.23205i 0 0 0
1009.1 0 0 0 −0.500000 + 0.133975i 0 2.13397 1.23205i 0 0 0
1585.1 0 0 0 −0.500000 + 1.86603i 0 3.86603 + 2.23205i 0 0 0
 $$n$$: e.g. 2-40 or 990-1000 Significant digits: Format: Complex embeddings Normalized embeddings Satake parameters Satake angles

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
144.x even 12 1 inner

Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1728.2.bc.b 4
3.b odd 2 1 576.2.bb.b 4
4.b odd 2 1 432.2.y.a 4
9.c even 3 1 1728.2.bc.c 4
9.d odd 6 1 576.2.bb.a 4
12.b even 2 1 144.2.x.d yes 4
16.e even 4 1 1728.2.bc.c 4
16.f odd 4 1 432.2.y.d 4
36.f odd 6 1 432.2.y.d 4
36.h even 6 1 144.2.x.a 4
48.i odd 4 1 576.2.bb.a 4
48.k even 4 1 144.2.x.a 4
144.u even 12 1 144.2.x.d yes 4
144.v odd 12 1 432.2.y.a 4
144.w odd 12 1 576.2.bb.b 4
144.x even 12 1 inner 1728.2.bc.b 4

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
144.2.x.a 4 36.h even 6 1
144.2.x.a 4 48.k even 4 1
144.2.x.d yes 4 12.b even 2 1
144.2.x.d yes 4 144.u even 12 1
432.2.y.a 4 4.b odd 2 1
432.2.y.a 4 144.v odd 12 1
432.2.y.d 4 16.f odd 4 1
432.2.y.d 4 36.f odd 6 1
576.2.bb.a 4 9.d odd 6 1
576.2.bb.a 4 48.i odd 4 1
576.2.bb.b 4 3.b odd 2 1
576.2.bb.b 4 144.w odd 12 1
1728.2.bc.b 4 1.a even 1 1 trivial
1728.2.bc.b 4 144.x even 12 1 inner
1728.2.bc.c 4 9.c even 3 1
1728.2.bc.c 4 16.e even 4 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator $$T_{5}^{4} + 2 T_{5}^{3} + 5 T_{5}^{2} + 4 T_{5} + 1$$ acting on $$S_{2}^{\mathrm{new}}(1728, [\chi])$$.

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T^{4}$$
$3$ $$T^{4}$$
$5$ $$1 + 4 T + 5 T^{2} + 2 T^{3} + T^{4}$$
$7$ $$121 - 132 T + 59 T^{2} - 12 T^{3} + T^{4}$$
$11$ $$1 - 2 T + 5 T^{2} - 4 T^{3} + T^{4}$$
$13$ $$121 - 88 T + 17 T^{2} - 2 T^{3} + T^{4}$$
$17$ $$( 4 + T )^{4}$$
$19$ $$( 18 - 6 T + T^{2} )^{2}$$
$23$ $$9 - 36 T + 51 T^{2} - 12 T^{3} + T^{4}$$
$29$ $$9 + 9 T^{2} - 6 T^{3} + T^{4}$$
$31$ $$121 + 88 T + 75 T^{2} - 8 T^{3} + T^{4}$$
$37$ $$4356 + 1584 T + 288 T^{2} + 24 T^{3} + T^{4}$$
$41$ $$81 - 162 T + 99 T^{2} + 18 T^{3} + T^{4}$$
$43$ $$3481 + 826 T + 65 T^{2} + 8 T^{3} + T^{4}$$
$47$ $$121 + 88 T + 75 T^{2} - 8 T^{3} + T^{4}$$
$53$ $$676 + 416 T + 128 T^{2} + 16 T^{3} + T^{4}$$
$59$ $$81 - 54 T + 45 T^{2} - 12 T^{3} + T^{4}$$
$61$ $$1089 - 396 T + 261 T^{2} - 30 T^{3} + T^{4}$$
$67$ $$121 - 22 T + 65 T^{2} + 16 T^{3} + T^{4}$$
$71$ $$1024 + 128 T^{2} + T^{4}$$
$73$ $$16 + 56 T^{2} + T^{4}$$
$79$ $$9 + 3 T^{2} + T^{4}$$
$83$ $$32041 + 3938 T + 185 T^{2} + 16 T^{3} + T^{4}$$
$89$ $$35344 + 392 T^{2} + T^{4}$$
$97$ $$( 1 + T + T^{2} )^{2}$$