Polynomial effective density in quotient of ${\mathrm{SL}}_2({\mathbb{Q}}_p)\times {\mathrm{SL}}_2({\mathbb{Q}}_p)$

Zuo Lin

We prove an effective density theorem with polynomial error rate for orbits of upper triangular subgroup of ${\mathrm{SL}}_2({\mathbb{Q}}_p)$ in $\mathrm{SL}_2(\mathbb{Q}_p) \times \ma…