hyperelliptic(.ncag).info

holonomy group

$\mathrm{C}_{18}$, order $18$, SmallGroup $[18,2]$ · character table

tangent representation $\rho$

$\rho(g_{1}) = \operatorname{diag}(1, -1, -1, -1)$

$\rho(g_{2}) = \operatorname{diag}(1, \zeta_{9}, \zeta_{9}^{2}, \zeta_{9}^{4})$

order of $\omega_X$

18

number of moduli

1

irregularity $q = \dim \operatorname{Aut}^0(X)$

1

Albanese

the Albanese variety has dimension $1$; the general fiber has dimension $3$ and is an abelian variety or a hyperelliptic variety (details)

$\mathbf{D}^{\mathrm{b}}(X)$

indecomposable

Hochschild cohomology $\dim \mathrm{HH}^\bullet$

$(1, 2, 1, 0, 4, 8, 4, 0, 0)$

Hodge diamond

polyvector fields $\mathrm{H}^q(X,\bigwedge^p T_X)$