<Section><Heading>Chain Complex</Heading>

 Given a polyhedron, the face lattice defines a chain complex. This
 can be done using the following function.


<ManSection>
  <Meth Name="ChainComplexFromPolygon" 
        Arg="poly"/>
   <Returns>  A <Ref Fam="HapChainComplex" BookName="hap"></Ref></Returns>
   <Description>
     Given a polyhedron <A>poly</A> as generated by <Package>polymaking</Package>
     (see <Ref Meth="CreatePolymakeObjectFromFile"
     BookName="polymaking"></Ref>), this method generates the face
     complex.
   </Description>
</ManSection>

</Section>