Analogue of Feigin's map on $\mathrm{ı}$quantum group of split type

The (universal) $\mathrm{ı}$quantum groups are as a vast generalization of (Drinfeld double) quantum groups. We establish an algebra homomorphism from universal $\mathrm{ı}$quantum group of split type to a certain quantum torus, which can be viewed as an $\mathrm{ı}$analogue of Feigin’s map on the quantum group.