Properties

Label 1.6.M.8.3a
  
Name \(M(D_4)\)
Weight $1$
Degree $6$
Real dimension $3$
Components $8$
Contained in \(\mathrm{USp}(6)\)
Identity component \(\mathrm{SU}(2)_3\)
Component group \(D_4\)

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Invariants

Weight:$1$
Degree:$6$
$\mathbb{R}$-dimension:$3$
Components:$8$
Contained in:$\mathrm{USp}(6)$
Rational:yes

Identity component

Name:$\mathrm{SU}(2)_3$
$\mathbb{R}$-dimension:$3$
Description:$\left\{\begin{bmatrix}\alpha I_3&\beta I_3\\ \gamma I_3& \delta I_3\end{bmatrix}: \begin{bmatrix}\alpha&\beta\\\gamma&\delta\end{bmatrix}\in\mathrm{SU}(2)\right\}$ Symplectic form:$\begin{bmatrix} 0 & I_3\\ -I_3 & 0\end{bmatrix}$
Hodge circle:$u\mapsto \mathrm{diag}(u,u, u, \bar u, \bar u, \bar u)$

Component group

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

Subgroups and supergroups

Maximal subgroups:$M(D_2)$${}^{\times 2}$, $M(C_4)$
Minimal supergroups:$M(S_4)$

Moment sequences

$x$ $\mathrm{E}[x^{0}]$ $\mathrm{E}[x^{1}]$ $\mathrm{E}[x^{2}]$ $\mathrm{E}[x^{3}]$ $\mathrm{E}[x^{4}]$ $\mathrm{E}[x^{5}]$ $\mathrm{E}[x^{6}]$ $\mathrm{E}[x^{7}]$ $\mathrm{E}[x^{8}]$ $\mathrm{E}[x^{9}]$ $\mathrm{E}[x^{10}]$ $\mathrm{E}[x^{11}]$ $\mathrm{E}[x^{12}]$
$a_1$ $1$ $0$ $2$ $0$ $22$ $0$ $460$ $0$ $11494$ $0$ $310044$ $0$ $8768892$
$a_2$ $1$ $2$ $9$ $59$ $539$ $5772$ $66783$ $806934$ $10035579$ $127505390$ $1647411635$ $21577133943$ $285825335837$
$a_3$ $1$ $0$ $9$ $0$ $1388$ $0$ $320178$ $0$ $85665916$ $0$ $24952255629$ $0$ $7681494611956$

Moment simplex

$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=2\right)\colon$ $2$ $2$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=4\right)\colon$ $9$ $3$ $11$ $22$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=6\right)\colon$ $9$ $59$ $29$ $103$ $57$ $214$ $460$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=8\right)\colon$ $80$ $539$ $292$ $166$ $1097$ $619$ $2372$ $1335$ $5197$ $11494$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=10\right)\colon$ $843$ $5772$ $474$ $3214$ $1810$ $12492$ $7019$ $3954$ $27616$ $15495$ $61516$ $34440$ $137788$ $310044$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=12\right)\colon$ $1388$ $9500$ $66783$ $5342$ $37311$ $20922$ $148461$ $11742$ $83021$ $46476$ $332982$ $185901$ $103900$ $750427$
$$ $418276$ $1697678$ $944766$ $3852966$ $8768892$

Moment matrix

$\mathrm{E}\left[\chi_i\chi_j\right] = \begin{bmatrix}1&0&1&0&0&0&0&4&0&0&0&1&0&0&5\\0&2&0&1&0&6&0&0&9&0&3&0&10&20&0\\1&0&6&0&2&0&11&17&0&8&0&21&0&0&52\\0&1&0&5&0&11&0&0&16&0&5&0&25&35&0\\0&0&2&0&9&0&15&14&0&18&0&32&0&0&69\\0&6&0&11&0&40&0&0&63&0&26&0&90&140&0\\0&0&11&0&15&0&46&45&0&37&0&87&0&0&200\\4&0&17&0&14&0&45&70&0&42&0&97&0&0&240\\0&9&0&16&0&63&0&0&103&0&44&0&146&231&0\\0&0&8&0&18&0&37&42&0&46&0&87&0&0&196\\0&3&0&5&0&26&0&0&44&0&23&0&65&100&0\\1&0&21&0&32&0&87&97&0&87&0&195&0&0&447\\0&10&0&25&0&90&0&0&146&0&65&0&237&345&0\\0&20&0&35&0&140&0&0&231&0&100&0&345&544&0\\5&0&52&0&69&0&200&240&0&196&0&447&0&0&1056\end{bmatrix}$

$\ \ \ \mathrm{E}\left[\chi_i^2\right] = \begin{bmatrix}1&2&6&5&9&40&46&70&103&46&23&195&237&544&1056&513&539&1220&1002&277\end{bmatrix}$

Event probabilities

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