(University of New England)
Friday 1st April, 12.05-12.55pm, Carslaw 275
Connected sums and splitting of PD3-pairs
There are two distinct notions of connected sum for PD3-pairs
reflecting the situation of manifolds with boundary.
We discuss recent developments concerning the connection between the
splitting of the fundamental group of a PD3-pair
(X, ðX) as free product and the decomposition of
(X, ðX) as interior or
boundary connected sum of two PD3-pairs.