<Verb>PureComplexDifference(M,N):: PureCubicalComplex, PureCubicalComplex --> PureCubicalComplex</Verb>
<Verb>PureComplexDifference(M,N):: PurePermComplex, PurePermComplex --> PurePermComplex</Verb><P/>



<P/> Inputs two pure cubical complexes or two pure permutahedral complexes
and returns the difference <M> M - N</M>.
 


