Lower Bound for the Simplicial Volume of Closed Manifolds Covered by ${\mathbb{H}}^2\times {\mathbb{H}}^2\times {\mathbb{H}}^2$

Xiaofeng Meng

We estimate the upper bound for the ${\ell }^{\infty }$-norm of the volume form on ${\mathbb{H}}^2\times {\mathbb{H}}^2\times {\mathbb{H}}^2$ seen as a class in $H_{c}^{6}(\mathrm{PSL}_{2}\mat…