is it true that when we compute homologies and cohomologies with coefficients in a field then homology and cohomology groups are isomorphic to each other?
That is valid when homology groups are free with integer coefficients.
is it true that when we compute homologies and cohomologies with coefficients in a field then homology and cohomology groups are isomorphic to each other?
That is valid when homology groups are free with integer coefficients.