Phantom maps and purity in modular representation theory, II

D. J. Benson and G. Ph. Gnacadja

\begin{abstract}
In the second part of this paper, we use the theory described in the
first part to construct an example of a counterintuitive phenomenon.
We show how to produce
examples of filtered systems in the stable module category ${\sf stmod}(kG)$
which do not lift to filtered systems in the module category ${\sf mod}(kG)$.
Our main tool is the Extended Milnor Sequence, a five-term exact sequence
which specializes to the classical Milnor sequence under certain countability
conditions.
\end{abstract}