Properties

Label 1.6.G.4.1a
  
Name \(F_{ac}\times \mathrm{SU}(2)\)
Weight $1$
Degree $6$
Real dimension $5$
Components $4$
Contained in \(\mathrm{USp}(6)\)
Identity component \(\mathrm{U}(1)^2\times\mathrm{SU}(2)\)
Component group \(C_4\)

Downloads

Learn more

Invariants

Weight:$1$
Degree:$6$
$\mathbb{R}$-dimension:$5$
Components:$4$
Contained in:$\mathrm{USp}(6)$
Rational:yes

Identity component

Name:$\mathrm{U}(1)^2\times\mathrm{SU}(2)$
$\mathbb{R}$-dimension:$5$
Description:$\left\{\begin{bmatrix}A&0&0\\0&B&0\\0&0&C\end{bmatrix}: A,B\in\mathrm{U}(1)\subseteq\mathrm{SU}(2),C\in\mathrm{SU}(2)\right\}$ Symplectic form:$\begin{bmatrix}J_2&0&0\\0&J_2&0\\0&0&J_2\end{bmatrix},\ J_2:=\begin{bmatrix}0&1\\-1&0\end{bmatrix}$
Hodge circle:$u\mapsto\mathrm{diag}(u,\bar u, u, \bar u, u, \bar u)$

Component group

Name:$C_4$
Order:$4$
Abelian:yes
Generators:$\begin{bmatrix}0 & 0 & 0 & 1 & 0 & 0 \\0 & 0 & -1 & 0 & 0 & 0 \\-1 & 0 & 0 & 0& 0 & 0 \\0 & -1 & 0 & 0 & 0 & 0 \\0 & 0 & 0 & 0 & 1 & 0 \\0 & 0 & 0 & 0 & 0 & 1\\\end{bmatrix}$

Subgroups and supergroups

Maximal subgroups:$F_{ab}\times \mathrm{SU}(2)$
Minimal supergroups:

Moment sequences

$x$ $\mathrm{E}[x^{0}]$ $\mathrm{E}[x^{1}]$ $\mathrm{E}[x^{2}]$ $\mathrm{E}[x^{3}]$ $\mathrm{E}[x^{4}]$ $\mathrm{E}[x^{5}]$ $\mathrm{E}[x^{6}]$ $\mathrm{E}[x^{7}]$ $\mathrm{E}[x^{8}]$ $\mathrm{E}[x^{9}]$ $\mathrm{E}[x^{10}]$ $\mathrm{E}[x^{11}]$ $\mathrm{E}[x^{12}]$
$a_1$ $1$ $0$ $2$ $0$ $17$ $0$ $270$ $0$ $5439$ $0$ $123123$ $0$ $3001284$
$a_2$ $1$ $2$ $7$ $38$ $284$ $2567$ $25820$ $276845$ $3098618$ $35803781$ $424226048$ $5130820433$ $63130916975$
$a_3$ $1$ $0$ $7$ $0$ $658$ $0$ $111760$ $0$ $23819390$ $0$ $5769914640$ $0$ $1520601479760$

Moment simplex

$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=2\right)\colon$ $2$ $2$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=4\right)\colon$ $7$ $3$ $9$ $17$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=6\right)\colon$ $7$ $38$ $20$ $64$ $38$ $129$ $270$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=8\right)\colon$ $49$ $284$ $161$ $96$ $557$ $330$ $1174$ $695$ $2515$ $5439$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=10\right)\colon$ $420$ $2567$ $248$ $1485$ $874$ $5404$ $3164$ $1861$ $11688$ $6830$ $25489$ $14854$ $55895$ $123123$
$\left(\mathrm{E}\left[a_1^{e_1}a_2^{e_2}a_3^{e_3}\right]:\sum ie_i=12\right)\colon$ $658$ $4038$ $25820$ $2362$ $14927$ $8688$ $56155$ $5074$ $32524$ $18891$ $123459$ $71351$ $41342$ $272746$
$$ $157276$ $604807$ $348012$ $1345407$ $3001284$

Moment matrix

$\mathrm{E}\left[\chi_i\chi_j\right] = \begin{bmatrix}1&0&1&0&0&0&0&2&0&0&0&1&0&0&2\\0&2&0&1&0&4&0&0&4&0&2&0&5&9&0\\1&0&4&0&2&0&6&9&0&3&0&10&0&0&20\\0&1&0&3&0&6&0&0&8&0&3&0&10&14&0\\0&0&2&0&6&0&8&6&0&7&0&17&0&0&26\\0&4&0&6&0&21&0&0&26&0&14&0&38&54&0\\0&0&6&0&8&0&21&19&0&15&0&37&0&0&70\\2&0&9&0&6&0&19&29&0&13&0&38&0&0&80\\0&4&0&8&0&26&0&0&38&0&17&0&53&77&0\\0&0&3&0&7&0&15&13&0&15&0&30&0&0&60\\0&2&0&3&0&14&0&0&17&0&13&0&28&38&0\\1&0&10&0&17&0&37&38&0&30&0&81&0&0&148\\0&5&0&10&0&38&0&0&53&0&28&0&85&116&0\\0&9&0&14&0&54&0&0&77&0&38&0&116&174&0\\2&0&20&0&26&0&70&80&0&60&0&148&0&0&310\end{bmatrix}$

$\ \ \ \mathrm{E}\left[\chi_i^2\right] = \begin{bmatrix}1&2&4&3&6&21&21&29&38&15&13&81&85&174&310&136&146&296&229&57\end{bmatrix}$

Event probabilities

$-$$a_2\in\mathbb{Z}$$a_2=-1$$a_2=0$$a_2=1$$a_2=2$$a_2=3$
$-$$1$$3/4$$0$$0$$1/2$$0$$1/4$
$a_1=0$$0$$0$$0$$0$$0$$0$$0$
$a_3=0$$1/2$$1/2$$0$$0$$1/2$$0$$0$
$a_1=a_3=0$$0$$0$$0$$0$$0$$0$$0$