<Verb>HomToIntegers(C):: ChainComplex --> CochainComplex</Verb>
<Verb>HomToIntegers(R):: FreeResolution --> CochainComplex</Verb>
<Verb>HomToIntegers(F):: EquiChainMap --> CochainMap</Verb><P/>


<P/> Inputs a chain complex <M>C</M> of free abelian groups  
and returns the cochain complex <M>Hom_{\mathbb Z}(C,\mathbb Z)</M>.

<P/> Inputs a free <M>\mathbb ZG</M>-resolution <M>R</M> in characteristic <M>0</M>  
and returns the cochain complex <M>Hom_{\mathbb ZG}(R,\mathbb Z)</M>.


<P/> Inputs an equivariant chain map <M>F\colon R\rightarrow S</M> of 
resolutions 
and returns the induced cochain map <M>Hom_{\mathbb ZG}(S,\mathbb Z)
\longrightarrow Hom_{\mathbb ZG}(R,\mathbb Z)</M>.


