# Properties

 Label 2646.2.h.m Level $2646$ Weight $2$ Character orbit 2646.h Analytic conductor $21.128$ Analytic rank $0$ Dimension $4$ CM no Inner twists $2$

# Related objects

## Newspace parameters

 Level: $$N$$ $$=$$ $$2646 = 2 \cdot 3^{3} \cdot 7^{2}$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 2646.h (of order $$3$$, degree $$2$$, not minimal)

## Newform invariants

 Self dual: no Analytic conductor: $$21.1284163748$$ Analytic rank: $$0$$ Dimension: $$4$$ Relative dimension: $$2$$ over $$\Q(\zeta_{3})$$ Coefficient field: $$\Q(\sqrt{-2}, \sqrt{-3})$$ Defining polynomial: $$x^{4} - 2 x^{2} + 4$$ Coefficient ring: $$\Z[a_1, \ldots, a_{5}]$$ Coefficient ring index: $$3$$ Twist minimal: no (minimal twist has level 126) Sato-Tate group: $\mathrm{SU}(2)[C_{3}]$

## $q$-expansion

Coefficients of the $$q$$-expansion are expressed in terms of a basis $$1,\beta_1,\beta_2,\beta_3$$ for the coefficient ring described below. We also show the integral $$q$$-expansion of the trace form.

 $$f(q)$$ $$=$$ $$q + \beta_{1} q^{2} + ( -1 + \beta_{1} ) q^{4} + ( -1 - \beta_{3} ) q^{5} - q^{8} +O(q^{10})$$ $$q + \beta_{1} q^{2} + ( -1 + \beta_{1} ) q^{4} + ( -1 - \beta_{3} ) q^{5} - q^{8} + ( -\beta_{1} - \beta_{2} ) q^{10} -2 q^{11} + 2 \beta_{2} q^{13} -\beta_{1} q^{16} + 2 \beta_{1} q^{17} + ( -5 + 5 \beta_{1} + \beta_{2} - \beta_{3} ) q^{19} + ( 1 - \beta_{1} - \beta_{2} + \beta_{3} ) q^{20} -2 \beta_{1} q^{22} + q^{23} + ( 2 + 2 \beta_{3} ) q^{25} + ( 2 \beta_{2} - 2 \beta_{3} ) q^{26} + ( -2 + 2 \beta_{1} - 2 \beta_{2} + 2 \beta_{3} ) q^{29} + ( -6 + 6 \beta_{1} ) q^{31} + ( 1 - \beta_{1} ) q^{32} + ( -2 + 2 \beta_{1} ) q^{34} + ( -2 + 2 \beta_{1} - 4 \beta_{2} + 4 \beta_{3} ) q^{37} + ( -5 - \beta_{3} ) q^{38} + ( 1 + \beta_{3} ) q^{40} -4 \beta_{2} q^{41} + ( -2 + 2 \beta_{1} - 2 \beta_{2} + 2 \beta_{3} ) q^{43} + ( 2 - 2 \beta_{1} ) q^{44} + \beta_{1} q^{46} -4 \beta_{2} q^{47} + ( 2 \beta_{1} + 2 \beta_{2} ) q^{50} -2 \beta_{3} q^{52} + ( -6 \beta_{1} + 2 \beta_{2} ) q^{53} + ( 2 + 2 \beta_{3} ) q^{55} + ( -2 + 2 \beta_{3} ) q^{58} + ( -2 + 2 \beta_{1} ) q^{59} + ( -9 \beta_{1} - \beta_{2} ) q^{61} -6 q^{62} + q^{64} + ( -12 \beta_{1} - 2 \beta_{2} ) q^{65} + ( 8 - 8 \beta_{1} + 2 \beta_{2} - 2 \beta_{3} ) q^{67} -2 q^{68} + ( -5 - 2 \beta_{3} ) q^{71} + ( 2 \beta_{1} - 2 \beta_{2} ) q^{73} + ( -2 + 4 \beta_{3} ) q^{74} + ( -5 \beta_{1} - \beta_{2} ) q^{76} + ( -3 \beta_{1} - 2 \beta_{2} ) q^{79} + ( \beta_{1} + \beta_{2} ) q^{80} + ( -4 \beta_{2} + 4 \beta_{3} ) q^{82} + ( 2 - 2 \beta_{1} ) q^{83} + ( -2 \beta_{1} - 2 \beta_{2} ) q^{85} + ( -2 + 2 \beta_{3} ) q^{86} + 2 q^{88} + ( -12 + 12 \beta_{1} - 2 \beta_{2} + 2 \beta_{3} ) q^{89} + ( -1 + \beta_{1} ) q^{92} + ( -4 \beta_{2} + 4 \beta_{3} ) q^{94} + ( 11 - 11 \beta_{1} - 6 \beta_{2} + 6 \beta_{3} ) q^{95} + ( 2 - 2 \beta_{1} - 2 \beta_{2} + 2 \beta_{3} ) q^{97} +O(q^{100})$$ $$\operatorname{Tr}(f)(q)$$ $$=$$ $$4q + 2q^{2} - 2q^{4} - 4q^{5} - 4q^{8} + O(q^{10})$$ $$4q + 2q^{2} - 2q^{4} - 4q^{5} - 4q^{8} - 2q^{10} - 8q^{11} - 2q^{16} + 4q^{17} - 10q^{19} + 2q^{20} - 4q^{22} + 4q^{23} + 8q^{25} - 4q^{29} - 12q^{31} + 2q^{32} - 4q^{34} - 4q^{37} - 20q^{38} + 4q^{40} - 4q^{43} + 4q^{44} + 2q^{46} + 4q^{50} - 12q^{53} + 8q^{55} - 8q^{58} - 4q^{59} - 18q^{61} - 24q^{62} + 4q^{64} - 24q^{65} + 16q^{67} - 8q^{68} - 20q^{71} + 4q^{73} - 8q^{74} - 10q^{76} - 6q^{79} + 2q^{80} + 4q^{83} - 4q^{85} - 8q^{86} + 8q^{88} - 24q^{89} - 2q^{92} + 22q^{95} + 4q^{97} + O(q^{100})$$

Basis of coefficient ring in terms of a root $$\nu$$ of $$x^{4} - 2 x^{2} + 4$$:

 $$\beta_{0}$$ $$=$$ $$1$$ $$\beta_{1}$$ $$=$$ $$\nu^{2}$$$$/2$$ $$\beta_{2}$$ $$=$$ $$($$$$\nu^{3} + 2 \nu$$$$)/2$$ $$\beta_{3}$$ $$=$$ $$($$$$-\nu^{3} + 4 \nu$$$$)/2$$
 $$1$$ $$=$$ $$\beta_0$$ $$\nu$$ $$=$$ $$($$$$\beta_{3} + \beta_{2}$$$$)/3$$ $$\nu^{2}$$ $$=$$ $$2 \beta_{1}$$ $$\nu^{3}$$ $$=$$ $$($$$$-2 \beta_{3} + 4 \beta_{2}$$$$)/3$$

## Character values

We give the values of $$\chi$$ on generators for $$\left(\mathbb{Z}/2646\mathbb{Z}\right)^\times$$.

 $$n$$ $$785$$ $$1081$$ $$\chi(n)$$ $$-\beta_{1}$$ $$-1 + \beta_{1}$$

## 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 $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
361.1
 1.22474 − 0.707107i −1.22474 + 0.707107i 1.22474 + 0.707107i −1.22474 − 0.707107i
0.500000 0.866025i 0 −0.500000 0.866025i −3.44949 0 0 −1.00000 0 −1.72474 + 2.98735i
361.2 0.500000 0.866025i 0 −0.500000 0.866025i 1.44949 0 0 −1.00000 0 0.724745 1.25529i
667.1 0.500000 + 0.866025i 0 −0.500000 + 0.866025i −3.44949 0 0 −1.00000 0 −1.72474 2.98735i
667.2 0.500000 + 0.866025i 0 −0.500000 + 0.866025i 1.44949 0 0 −1.00000 0 0.724745 + 1.25529i
 $$n$$: 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
63.g even 3 1 inner

## Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2646.2.h.m 4
3.b odd 2 1 882.2.h.k 4
7.b odd 2 1 2646.2.h.n 4
7.c even 3 1 378.2.f.d 4
7.c even 3 1 2646.2.e.l 4
7.d odd 6 1 2646.2.e.k 4
7.d odd 6 1 2646.2.f.k 4
9.c even 3 1 2646.2.e.l 4
9.d odd 6 1 882.2.e.m 4
21.c even 2 1 882.2.h.l 4
21.g even 6 1 882.2.e.n 4
21.g even 6 1 882.2.f.j 4
21.h odd 6 1 126.2.f.c 4
21.h odd 6 1 882.2.e.m 4
28.g odd 6 1 3024.2.r.e 4
63.g even 3 1 1134.2.a.i 2
63.g even 3 1 inner 2646.2.h.m 4
63.h even 3 1 378.2.f.d 4
63.i even 6 1 882.2.f.j 4
63.j odd 6 1 126.2.f.c 4
63.k odd 6 1 2646.2.h.n 4
63.k odd 6 1 7938.2.a.bm 2
63.l odd 6 1 2646.2.e.k 4
63.n odd 6 1 882.2.h.k 4
63.n odd 6 1 1134.2.a.p 2
63.o even 6 1 882.2.e.n 4
63.s even 6 1 882.2.h.l 4
63.s even 6 1 7938.2.a.bn 2
63.t odd 6 1 2646.2.f.k 4
84.n even 6 1 1008.2.r.e 4
252.o even 6 1 9072.2.a.bk 2
252.u odd 6 1 3024.2.r.e 4
252.bb even 6 1 1008.2.r.e 4
252.bl odd 6 1 9072.2.a.bd 2

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
126.2.f.c 4 21.h odd 6 1
126.2.f.c 4 63.j odd 6 1
378.2.f.d 4 7.c even 3 1
378.2.f.d 4 63.h even 3 1
882.2.e.m 4 9.d odd 6 1
882.2.e.m 4 21.h odd 6 1
882.2.e.n 4 21.g even 6 1
882.2.e.n 4 63.o even 6 1
882.2.f.j 4 21.g even 6 1
882.2.f.j 4 63.i even 6 1
882.2.h.k 4 3.b odd 2 1
882.2.h.k 4 63.n odd 6 1
882.2.h.l 4 21.c even 2 1
882.2.h.l 4 63.s even 6 1
1008.2.r.e 4 84.n even 6 1
1008.2.r.e 4 252.bb even 6 1
1134.2.a.i 2 63.g even 3 1
1134.2.a.p 2 63.n odd 6 1
2646.2.e.k 4 7.d odd 6 1
2646.2.e.k 4 63.l odd 6 1
2646.2.e.l 4 7.c even 3 1
2646.2.e.l 4 9.c even 3 1
2646.2.f.k 4 7.d odd 6 1
2646.2.f.k 4 63.t odd 6 1
2646.2.h.m 4 1.a even 1 1 trivial
2646.2.h.m 4 63.g even 3 1 inner
2646.2.h.n 4 7.b odd 2 1
2646.2.h.n 4 63.k odd 6 1
3024.2.r.e 4 28.g odd 6 1
3024.2.r.e 4 252.u odd 6 1
7938.2.a.bm 2 63.k odd 6 1
7938.2.a.bn 2 63.s even 6 1
9072.2.a.bd 2 252.bl odd 6 1
9072.2.a.bk 2 252.o even 6 1

## Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $$S_{2}^{\mathrm{new}}(2646, [\chi])$$:

 $$T_{5}^{2} + 2 T_{5} - 5$$ $$T_{11} + 2$$ $$T_{13}^{4} + 24 T_{13}^{2} + 576$$

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$( 1 - T + T^{2} )^{2}$$
$3$ $$T^{4}$$
$5$ $$( -5 + 2 T + T^{2} )^{2}$$
$7$ $$T^{4}$$
$11$ $$( 2 + T )^{4}$$
$13$ $$576 + 24 T^{2} + T^{4}$$
$17$ $$( 4 - 2 T + T^{2} )^{2}$$
$19$ $$361 + 190 T + 81 T^{2} + 10 T^{3} + T^{4}$$
$23$ $$( -1 + T )^{4}$$
$29$ $$400 - 80 T + 36 T^{2} + 4 T^{3} + T^{4}$$
$31$ $$( 36 + 6 T + T^{2} )^{2}$$
$37$ $$8464 - 368 T + 108 T^{2} + 4 T^{3} + T^{4}$$
$41$ $$9216 + 96 T^{2} + T^{4}$$
$43$ $$400 - 80 T + 36 T^{2} + 4 T^{3} + T^{4}$$
$47$ $$9216 + 96 T^{2} + T^{4}$$
$53$ $$144 + 144 T + 132 T^{2} + 12 T^{3} + T^{4}$$
$59$ $$( 4 + 2 T + T^{2} )^{2}$$
$61$ $$5625 + 1350 T + 249 T^{2} + 18 T^{3} + T^{4}$$
$67$ $$1600 - 640 T + 216 T^{2} - 16 T^{3} + T^{4}$$
$71$ $$( 1 + 10 T + T^{2} )^{2}$$
$73$ $$400 + 80 T + 36 T^{2} - 4 T^{3} + T^{4}$$
$79$ $$225 - 90 T + 51 T^{2} + 6 T^{3} + T^{4}$$
$83$ $$( 4 - 2 T + T^{2} )^{2}$$
$89$ $$14400 + 2880 T + 456 T^{2} + 24 T^{3} + T^{4}$$
$97$ $$400 + 80 T + 36 T^{2} - 4 T^{3} + T^{4}$$