Should the shliach tzibur say kaddish yatom if there are no mourners in the minyan?
In Ashkenazi minyan, yes. That is the kaddish after Aleinu.
In Sephardi minyan, not necessary
Should the shliach tzibur say kaddish yatom if there are no mourners in the minyan?
In Ashkenazi minyan, yes. That is the kaddish after Aleinu.
In Sephardi minyan, not necessary