From: Berrick A J <matberic@nus.edu.sg>
Subject: RE: question & 2 confs
Date: Thu, 31 Aug 2000 08:13:09 +0800

        Alexei Davydov and I have a preprint on this subject, in which we
derive a Hochschild cohomology obstruction to the multiplicative splitting
of the sequence.  We can even calculate it in certain important situations
that we need for computation of the cohomology of Heisenberg groups.

Best regards,
Jon.