  The "minimal matter + scalar" system can be embedded into the twisted N=2
topological algebra in two ways: a la DDK or a la KM. Here we present some
results concerning the topological descendants and their DDK and KM
realizations. In particular, we prove four "no-ghost" theorems (two for null
states) regarding the reduction of the topological descendants into secon-
daries of the "minimal matter + scalar" conformal field theory. We write down
the relevant expressions for the case of level 2 descendants.
