Find an example of a short exact sequence of Z-modules that does not split. Any hints?
Follow Math Help Forum on Facebook and Google+
. It is clearly a short exact sequence of abelian group and , since is torsion while is torsion-free.
Last edited by Curu; Jan 16th 2013 at 07:48 AM.
The above answer was posted as I was writing the following different example, but I'll post it anyway.
View Tag Cloud