Properties

Label 1.6.L.16.11a
  
Name \(L(J(D_4),D_{4,1})\)
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:$\begin{bmatrix}1 & 0 & 0 & 0 & 0 & 0 \\0 & 1 & 0 & 0 & 0 & 0 \\0 & 0 & 0 & 0 &0 & \zeta_{8}^{1} \\0 & 0 & 0 & 0 & \zeta_{8}^{3} & 0 \\0 & 0 & 0 & \zeta_{8}^{3} & 0 & 0 \\0 & 0 & \zeta_{8}^{1} & 0 & 0 & 0 \\\end{bmatrix}, \begin{bmatrix}1 & 0 & 0 & 0 & 0 & 0 \\0 & 1 & 0 & 0 & 0 & 0 \\0 & 0 & 0 & 1 & 0 & 0 \\0 & 0 & -1 & 0 & 0 & 0 \\0 & 0 & 0 & 0 & 0 & 1 \\0 & 0& 0 & 0 & -1 & 0 \\\end{bmatrix}, \begin{bmatrix}0 & 1 & 0 & 0 & 0 & 0 \\-1 & 0& 0 & 0 & 0 & 0 \\0 & 0 & 0 & 0 & 0 & 1 \\0 & 0 & 0 & 0 & -1 & 0 \\0 & 0 & 0 & -1 & 0 & 0 \\0 & 0 & 1 & 0 & 0 & 0 \\\end{bmatrix}$

Subgroups and supergroups

Maximal subgroups:$L(D_4,D_2)$, $L(D_{4,2},D_{2,1})$, $L(D_{4,1},C_{4,1})$, $L(J(D_2),D_{2,1})$, $L(J(D_2),D_2)$, $L_1(D_{4,1})$, $L(J(C_4),C_{4,1})$
Minimal supergroups:$L_2(J(D_4))$${}^{\times 2}$, $L(J(O),O_1)$

Moment sequences

$x$ $\mathrm{E}[x^{0}]$ $\mathrm{E}[x^{1}]$ $\mathrm{E}[x^{2}]$ $\mathrm{E}[x^{3}]$ $\mathrm{E}[x^{4}]$ $\mathrm{E}[x^{5}]$ $\mathrm{E}[x^{6}]$ $\mathrm{E}[x^{7}]$ $\mathrm{E}[x^{8}]$ $\mathrm{E}[x^{9}]$ $\mathrm{E}[x^{10}]$ $\mathrm{E}[x^{11}]$ $\mathrm{E}[x^{12}]$
$a_1$ $1$ $0$ $2$ $0$ $18$ $0$ $335$ $0$ $8575$ $0$ $245637$ $0$ $7394310$
$a_2$ $1$ $2$ $8$ $44$ $372$ $4032$ $48986$ $626187$ $8223018$ $109860596$ $1486300278$ $20307098847$ $279693611379$
$a_3$ $1$ $0$ $8$ $0$ $957$ $0$ $243140$ $0$ $73167017$ $0$ $23524366068$ $0$ $7868208907812$

Moment simplex

$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=2\right)\colon$ $2$ $2$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=4\right)\colon$ $8$ $3$ $9$ $18$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=6\right)\colon$ $8$ $44$ $22$ $73$ $42$ $153$ $335$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=8\right)\colon$ $57$ $372$ $201$ $118$ $759$ $433$ $1683$ $950$ $3780$ $8575$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=10\right)\colon$ $575$ $4032$ $327$ $2232$ $1260$ $8941$ $5008$ $2820$ $20325$ $11350$ $46470$ $25865$ $106666$ $245637$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=12\right)\colon$ $957$ $6676$ $48986$ $3747$ $27136$ $15125$ $111871$ $8445$ $62073$ $34504$ $257483$ $142597$ $79116$ $594303$
$$ $328608$ $1374751$ $759024$ $3185826$ $7394310$

Moment matrix

$\mathrm{E}\left[\chi_i\chi_j\right] = \begin{bmatrix}1&0&1&0&0&0&0&3&0&0&0&0&0&0&3\\0&2&0&1&0&4&0&0&6&0&3&0&6&12&0\\1&0&5&0&1&0&7&11&0&5&0&14&0&0&35\\0&1&0&4&0&7&0&0&10&0&3&0&19&22&0\\0&0&1&0&8&0&10&8&0&14&0&24&0&0&49\\0&4&0&7&0&27&0&0&42&0&20&0&66&101&0\\0&0&7&0&10&0&33&28&0&25&0&64&0&0&147\\3&0&11&0&8&0&28&52&0&28&0&71&0&0&179\\0&6&0&10&0&42&0&0&73&0&33&0&108&172&0\\0&0&5&0&14&0&25&28&0&40&0&65&0&0&151\\0&3&0&3&0&20&0&0&33&0&19&0&49&82&0\\0&0&14&0&24&0&64&71&0&65&0&157&0&0&355\\0&6&0&19&0&66&0&0&108&0&49&0&192&274&0\\0&12&0&22&0&101&0&0&172&0&82&0&274&436&0\\3&0&35&0&49&0&147&179&0&151&0&355&0&0&856\end{bmatrix}$

$\ \ \ \mathrm{E}\left[\chi_i^2\right] = \begin{bmatrix}1&2&5&4&8&27&33&52&73&40&19&157&192&436&856&434&454&1048&899&267\end{bmatrix}$

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$$5/16$
$a_1=0$$3/8$$1/4$$1/16$$0$$0$$0$$3/16$
$a_3=0$$1/2$$3/8$$1/16$$0$$1/8$$0$$3/16$
$a_1=a_3=0$$3/8$$1/4$$1/16$$0$$0$$0$$3/16$