Abstract:
We will discuss a certain explicit cohomological conditions on a smooth
projective threefold that is enough for universal triviality of
zero-cycles on the threefold. We will consider two examples when these
conditions are satisfied: a threefold with a full exceptional collection
and a double covering of the projective space ramified over a quartic
with 10 singular points. In particular, for the second example, this
means that it is impossible to use Voisin's method in order to show
non-rationality of the threefold.