# Properties

 Label 6400.2.a.cv Level $6400$ Weight $2$ Character orbit 6400.a Self dual yes Analytic conductor $51.104$ Analytic rank $0$ Dimension $4$ CM discriminant -20 Inner twists $8$

# Related objects

## Newspace parameters

 Level: $$N$$ $$=$$ $$6400 = 2^{8} \cdot 5^{2}$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 6400.a (trivial)

## Newform invariants

 Self dual: yes Analytic conductor: $$51.1042572936$$ Analytic rank: $$0$$ Dimension: $$4$$ Coefficient field: $$\Q(\sqrt{2}, \sqrt{5})$$ Defining polynomial: $$x^{4} - 6 x^{2} + 4$$ Coefficient ring: $$\Z[a_1, \ldots, a_{23}]$$ Coefficient ring index: $$2^{3}$$ Twist minimal: no (minimal twist has level 640) Fricke sign: $$-1$$ Sato-Tate group: $N(\mathrm{U}(1))$

## $q$-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.

 $$f(q)$$ $$=$$ $$q + \beta_{2} q^{3} -3 \beta_{1} q^{7} + 7 q^{9} +O(q^{10})$$ $$q + \beta_{2} q^{3} -3 \beta_{1} q^{7} + 7 q^{9} -3 \beta_{3} q^{21} + \beta_{1} q^{23} + 4 \beta_{2} q^{27} + 2 \beta_{3} q^{29} + 12 q^{41} -\beta_{2} q^{43} -7 \beta_{1} q^{47} + 11 q^{49} + 3 \beta_{3} q^{61} -21 \beta_{1} q^{63} + 5 \beta_{2} q^{67} + \beta_{3} q^{69} + 19 q^{81} + 3 \beta_{2} q^{83} + 20 \beta_{1} q^{87} -6 q^{89} +O(q^{100})$$ $$\operatorname{Tr}(f)(q)$$ $$=$$ $$4q + 28q^{9} + O(q^{10})$$ $$4q + 28q^{9} + 48q^{41} + 44q^{49} + 76q^{81} - 24q^{89} + O(q^{100})$$

Basis of coefficient ring in terms of a root $$\nu$$ of $$x^{4} - 6 x^{2} + 4$$:

 $$\beta_{0}$$ $$=$$ $$1$$ $$\beta_{1}$$ $$=$$ $$($$$$\nu^{3} - 4 \nu$$$$)/2$$ $$\beta_{2}$$ $$=$$ $$($$$$-\nu^{3} + 8 \nu$$$$)/2$$ $$\beta_{3}$$ $$=$$ $$2 \nu^{2} - 6$$
 $$1$$ $$=$$ $$\beta_0$$ $$\nu$$ $$=$$ $$($$$$\beta_{2} + \beta_{1}$$$$)/2$$ $$\nu^{2}$$ $$=$$ $$($$$$\beta_{3} + 6$$$$)/2$$ $$\nu^{3}$$ $$=$$ $$2 \beta_{2} + 4 \beta_{1}$$

## 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 $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
1.1
 −0.874032 −2.28825 2.28825 0.874032
0 −3.16228 0 0 0 −4.24264 0 7.00000 0
1.2 0 −3.16228 0 0 0 4.24264 0 7.00000 0
1.3 0 3.16228 0 0 0 −4.24264 0 7.00000 0
1.4 0 3.16228 0 0 0 4.24264 0 7.00000 0
 $$n$$: e.g. 2-40 or 990-1000 Significant digits: Format: Complex embeddings Normalized embeddings Satake parameters Satake angles

## Atkin-Lehner signs

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

## Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
20.d odd 2 1 CM by $$\Q(\sqrt{-5})$$
4.b odd 2 1 inner
5.b even 2 1 inner
8.b even 2 1 inner
8.d odd 2 1 inner
40.e odd 2 1 inner
40.f even 2 1 inner

## Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 6400.2.a.cv 4
4.b odd 2 1 inner 6400.2.a.cv 4
5.b even 2 1 inner 6400.2.a.cv 4
5.c odd 4 2 1280.2.c.f 4
8.b even 2 1 inner 6400.2.a.cv 4
8.d odd 2 1 inner 6400.2.a.cv 4
16.e even 4 2 3200.2.d.i 4
16.f odd 4 2 3200.2.d.i 4
20.d odd 2 1 CM 6400.2.a.cv 4
20.e even 4 2 1280.2.c.f 4
40.e odd 2 1 inner 6400.2.a.cv 4
40.f even 2 1 inner 6400.2.a.cv 4
40.i odd 4 2 1280.2.c.f 4
40.k even 4 2 1280.2.c.f 4
80.i odd 4 2 640.2.f.f 4
80.j even 4 2 640.2.f.f 4
80.k odd 4 2 3200.2.d.i 4
80.q even 4 2 3200.2.d.i 4
80.s even 4 2 640.2.f.f 4
80.t odd 4 2 640.2.f.f 4

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
640.2.f.f 4 80.i odd 4 2
640.2.f.f 4 80.j even 4 2
640.2.f.f 4 80.s even 4 2
640.2.f.f 4 80.t odd 4 2
1280.2.c.f 4 5.c odd 4 2
1280.2.c.f 4 20.e even 4 2
1280.2.c.f 4 40.i odd 4 2
1280.2.c.f 4 40.k even 4 2
3200.2.d.i 4 16.e even 4 2
3200.2.d.i 4 16.f odd 4 2
3200.2.d.i 4 80.k odd 4 2
3200.2.d.i 4 80.q even 4 2
6400.2.a.cv 4 1.a even 1 1 trivial
6400.2.a.cv 4 4.b odd 2 1 inner
6400.2.a.cv 4 5.b even 2 1 inner
6400.2.a.cv 4 8.b even 2 1 inner
6400.2.a.cv 4 8.d odd 2 1 inner
6400.2.a.cv 4 20.d odd 2 1 CM
6400.2.a.cv 4 40.e odd 2 1 inner
6400.2.a.cv 4 40.f even 2 1 inner

## Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $$S_{2}^{\mathrm{new}}(\Gamma_0(6400))$$:

 $$T_{3}^{2} - 10$$ $$T_{7}^{2} - 18$$ $$T_{11}$$ $$T_{13}$$ $$T_{17}$$ $$T_{29}^{2} - 80$$ $$T_{31}$$

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T^{4}$$
$3$ $$( -10 + T^{2} )^{2}$$
$5$ $$T^{4}$$
$7$ $$( -18 + T^{2} )^{2}$$
$11$ $$T^{4}$$
$13$ $$T^{4}$$
$17$ $$T^{4}$$
$19$ $$T^{4}$$
$23$ $$( -2 + T^{2} )^{2}$$
$29$ $$( -80 + T^{2} )^{2}$$
$31$ $$T^{4}$$
$37$ $$T^{4}$$
$41$ $$( -12 + T )^{4}$$
$43$ $$( -10 + T^{2} )^{2}$$
$47$ $$( -98 + T^{2} )^{2}$$
$53$ $$T^{4}$$
$59$ $$T^{4}$$
$61$ $$( -180 + T^{2} )^{2}$$
$67$ $$( -250 + T^{2} )^{2}$$
$71$ $$T^{4}$$
$73$ $$T^{4}$$
$79$ $$T^{4}$$
$83$ $$( -90 + T^{2} )^{2}$$
$89$ $$( 6 + T )^{4}$$
$97$ $$T^{4}$$