Properties

Label 1.6.L.16.11d
  
Name \(L(J(D_4),D_4)\)
Weight $1$
Degree $6$
Real dimension $6$
Components $16$
Contained in \(\mathrm{USp}(6)\)
Identity component \(\mathrm{U}(1)\times\mathrm{U}(1)_2\)
Component group \(C_2\times D_4\)

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Invariants

Weight:$1$
Degree:$6$
$\mathbb{R}$-dimension:$6$
Components:$16$
Contained in:$\mathrm{USp}(6)$
Rational:yes

Identity component

Name:$\mathrm{U}(1)\times\mathrm{U}(1)_2$
$\mathbb{R}$-dimension:$6$
Description:$\left\{\begin{bmatrix}A&0&0\\0&\alpha I_2&0\\0&0&\bar\alpha I_2\end{bmatrix}: A\in\mathrm{U}(1)\subseteq\mathrm{SU}(2),\ \alpha\bar\alpha = 1,\ \alpha\in\mathbb{C}\right\}$ Symplectic form:$\begin{bmatrix}J_2&0&0\\0&0&I_2\\0&-I_2&0\end{bmatrix},\ J_2:=\begin{bmatrix}0&1\\-1&0\end{bmatrix}$
Hodge circle:$u\mapsto\mathrm{diag}(u,\bar u, u, u,\bar u, \bar u)$

Component group

Name:$C_2\times D_4$
Order:$16$
Abelian:no
Generators:$\begin{bmatrix}1 & 0 & 0 & 0 & 0 & 0 \\0 & 1 & 0 & 0 & 0 & 0 \\0 & 0 & 0 & 1 &0 & 0 \\0 & 0 & -1 & 0 & 0 & 0 \\0 & 0 & 0 & 0 & 0 & 1 \\0 & 0 & 0 & 0 & -1 & 0 \\\end{bmatrix}, \begin{bmatrix}1 & 0 & 0 & 0 & 0 & 0 \\0 & 1 & 0 & 0 & 0 & 0 \\0 & 0 & \zeta_{8}^{1} & 0 & 0 & 0 \\0 & 0 & 0 & \zeta_{8}^{7} & 0 & 0 \\0 & 0 & 0 & 0 & \zeta_{8}^{7} & 0 \\0 & 0 & 0 & 0 & 0 & \zeta_{8}^{1} \\\end{bmatrix}, \begin{bmatrix}0 & 1 & 0 & 0 & 0 & 0 \\-1 & 0 & 0 & 0 & 0 & 0 \\0 & 0 & 0 & 0 & 0 & 1 \\0 & 0 & 0 & 0 & -1 & 0 \\0 & 0 & 0 & -1 & 0 & 0 \\0 & 0 & 1 & 0 & 0 & 0 \\\end{bmatrix}$

Subgroups and supergroups

Maximal subgroups:$L(D_{4,1},D_2)$${}^{\times 2}$, $L(J(D_2),D_2)$${}^{\times 2}$, $L(D_{4,2},C_4)$, $L_1(D_4)$, $L(J(C_4),C_4)$
Minimal supergroups:$L_2(J(D_4))$, $L(J(O),O)$

Moment sequences

$x$ $\mathrm{E}[x^{0}]$ $\mathrm{E}[x^{1}]$ $\mathrm{E}[x^{2}]$ $\mathrm{E}[x^{3}]$ $\mathrm{E}[x^{4}]$ $\mathrm{E}[x^{5}]$ $\mathrm{E}[x^{6}]$ $\mathrm{E}[x^{7}]$ $\mathrm{E}[x^{8}]$ $\mathrm{E}[x^{9}]$ $\mathrm{E}[x^{10}]$ $\mathrm{E}[x^{11}]$ $\mathrm{E}[x^{12}]$
$a_1$ $1$ $0$ $2$ $0$ $24$ $0$ $470$ $0$ $11235$ $0$ $297612$ $0$ $8425032$
$a_2$ $1$ $2$ $9$ $56$ $492$ $5172$ $59691$ $726945$ $9178434$ $119000576$ $1574504409$ $21165153495$ $288100598979$
$a_3$ $1$ $0$ $9$ $0$ $1242$ $0$ $284820$ $0$ $79207730$ $0$ $24435080964$ $0$ $8010398049192$

Moment simplex

$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=2\right)\colon$ $2$ $2$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=4\right)\colon$ $9$ $3$ $11$ $24$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=6\right)\colon$ $9$ $56$ $28$ $99$ $57$ $213$ $470$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=8\right)\colon$ $73$ $492$ $269$ $159$ $1017$ $588$ $2250$ $1290$ $5010$ $11235$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=10\right)\colon$ $755$ $5172$ $432$ $2904$ $1661$ $11380$ $6471$ $3700$ $25581$ $14510$ $57760$ $32655$ $130886$ $297612$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=12\right)\colon$ $1242$ $8439$ $59691$ $4800$ $33509$ $18939$ $134721$ $10722$ $75756$ $42700$ $306406$ $171910$ $96705$ $699014$
$$ $391384$ $1598968$ $893466$ $3666306$ $8425032$

Moment matrix

$\mathrm{E}\left[\chi_i\chi_j\right] = \begin{bmatrix}1&0&1&0&0&0&0&4&0&0&0&1&0&0&4\\0&2&0&1&0&6&0&0&8&0&5&0&9&17&0\\1&0&6&0&2&0&10&15&0&5&0&21&0&0&44\\0&1&0&5&0&10&0&0&12&0&5&0&26&29&0\\0&0&2&0&11&0&14&12&0&18&0&33&0&0&60\\0&6&0&10&0&38&0&0&54&0&28&0&84&125&0\\0&0&10&0&14&0&43&36&0&29&0&83&0&0&174\\4&0&15&0&12&0&36&66&0&35&0&88&0&0&208\\0&8&0&12&0&54&0&0&89&0&42&0&127&202&0\\0&0&5&0&18&0&29&35&0&48&0&76&0&0&170\\0&5&0&5&0&28&0&0&42&0&25&0&59&99&0\\1&0&21&0&33&0&83&88&0&76&0&191&0&0&404\\0&9&0&26&0&84&0&0&127&0&59&0&227&313&0\\0&17&0&29&0&125&0&0&202&0&99&0&313&490&0\\4&0&44&0&60&0&174&208&0&170&0&404&0&0&942\end{bmatrix}$

$\ \ \ \mathrm{E}\left[\chi_i^2\right] = \begin{bmatrix}1&2&6&5&11&38&43&66&89&48&25&191&227&490&942&469&490&1113&940&285\end{bmatrix}$

Event probabilities

$-$$a_2\in\mathbb{Z}$$a_2=-1$$a_2=0$$a_2=1$$a_2=2$$a_2=3$
$-$$1$$1/2$$1/16$$0$$1/8$$0$$5/16$
$a_1=0$$1/2$$1/2$$1/16$$0$$1/8$$0$$5/16$
$a_3=0$$1/2$$1/2$$1/16$$0$$1/8$$0$$5/16$
$a_1=a_3=0$$1/2$$1/2$$1/16$$0$$1/8$$0$$5/16$