In collaboration with Andrei Rapinchuk , Prasad has studied Zariski - dense subgroups of semi-simple groups .
In collaboration with Andrei Rapinchuk , Prasad proved the existence in such a subgroup of regular semi-simple elements with many desirable properties , ( 15 ) , ( 16 ) .
In collaboration with Andrei Rapinchuk , Prasad has studied Zariski - dense subgroups of semi-simple groups and proved the existence in such a subgroup of regular semi-simple elements with many desirable properties , ( 15 ) , ( 16 ) .