Properties

Label 1.6.I.8.3a
  
Name \(\mathrm{SU}(2)\times J(E_4)\)
Weight $1$
Degree $6$
Real dimension $6$
Components $8$
Contained in \(\mathrm{USp}(6)\)
Identity component \(\mathrm{SU}(2)\times\mathrm{SU}(2)_2\)
Component group \(D_4\)

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Invariants

Weight:$1$
Degree:$6$
$\mathbb{R}$-dimension:$6$
Components:$8$
Contained in:$\mathrm{USp}(6)$
Rational:yes

Identity component

Name:$\mathrm{SU}(2)\times\mathrm{SU}(2)_2$
$\mathbb{R}$-dimension:$6$
Description:$\left\{\begin{bmatrix}A&0&0\\0&B&0\\0&0&\overline{B}\end{bmatrix}: A,B\in\mathrm{SU}(2)\right\}$ 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:$\mathrm{diag}(u,\bar u, u,\bar u,\bar u,u)$

Component group

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

Subgroups and supergroups

Maximal subgroups:$\mathrm{SU}(2)\times E_4$, $\mathrm{SU}(2)\times J(E_2)$${}^{\times 2}$
Minimal supergroups:

Moment sequences

$x$ $\mathrm{E}[x^{0}]$ $\mathrm{E}[x^{1}]$ $\mathrm{E}[x^{2}]$ $\mathrm{E}[x^{3}]$ $\mathrm{E}[x^{4}]$ $\mathrm{E}[x^{5}]$ $\mathrm{E}[x^{6}]$ $\mathrm{E}[x^{7}]$ $\mathrm{E}[x^{8}]$ $\mathrm{E}[x^{9}]$ $\mathrm{E}[x^{10}]$ $\mathrm{E}[x^{11}]$ $\mathrm{E}[x^{12}]$
$a_1$ $1$ $0$ $2$ $0$ $14$ $0$ $175$ $0$ $2898$ $0$ $56364$ $0$ $1221132$
$a_2$ $1$ $2$ $7$ $32$ $197$ $1502$ $13185$ $126786$ $1298603$ $13939142$ $155185637$ $1779064344$ $20890616499$
$a_3$ $1$ $0$ $7$ $0$ $412$ $0$ $52590$ $0$ $9337524$ $0$ $1993420788$ $0$ $478001349936$

Moment simplex

$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=2\right)\colon$ $2$ $2$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=4\right)\colon$ $7$ $3$ $8$ $14$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=6\right)\colon$ $7$ $32$ $17$ $48$ $29$ $89$ $175$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=8\right)\colon$ $38$ $197$ $112$ $69$ $351$ $213$ $693$ $420$ $1405$ $2898$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=10\right)\colon$ $273$ $1502$ $164$ $879$ $528$ $2948$ $1761$ $1061$ $6049$ $3610$ $12606$ $7497$ $26544$ $56364$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=12\right)\colon$ $412$ $2258$ $13185$ $1348$ $7736$ $4588$ $27221$ $2733$ $16047$ $9498$ $57346$ $33727$ $19911$ $121984$
$$ $71547$ $261386$ $152880$ $563490$ $1221132$

Moment matrix

$\mathrm{E}\left[\chi_i\chi_j\right] = \begin{bmatrix}1&0&1&0&0&0&0&2&0&0&0&0&0&0&1\\0&2&0&1&0&3&0&0&3&0&1&0&2&5&0\\1&0&4&0&1&0&4&6&0&1&0&5&0&0&10\\0&1&0&3&0&4&0&0&4&0&1&0&6&7&0\\0&0&1&0&5&0&5&3&0&5&0&9&0&0&12\\0&3&0&4&0&13&0&0&14&0&7&0&18&26&0\\0&0&4&0&5&0&13&9&0&7&0&18&0&0&32\\2&0&6&0&3&0&9&19&0&6&0&16&0&0&36\\0&3&0&4&0&14&0&0&21&0&8&0&22&35&0\\0&0&1&0&5&0&7&6&0&11&0&13&0&0&26\\0&1&0&1&0&7&0&0&8&0&8&0&12&15&0\\0&0&5&0&9&0&18&16&0&13&0&37&0&0&60\\0&2&0&6&0&18&0&0&22&0&12&0&39&46&0\\0&5&0&7&0&26&0&0&35&0&15&0&46&75&0\\1&0&10&0&12&0&32&36&0&26&0&60&0&0&125\end{bmatrix}$

$\ \ \ \mathrm{E}\left[\chi_i^2\right] = \begin{bmatrix}1&2&4&3&5&13&13&19&21&11&8&37&39&75&125&58&67&121&91&28\end{bmatrix}$

Event probabilities

$\mathrm{Pr}[a_i=n]=0$ for $i=1,2,3$ and $n\in\mathbb{Z}$.