Index – P pi() (sage.homology.chain_homotopy.ChainContraction method) product_on_basis() (sage.homology.homology_vector_space_with_basis.CohomologyRing method)
Index – P pi() (sage.homology.chain_homotopy.ChainContraction method) product_on_basis() (sage.homology.homology_vector_space_with_basis.CohomologyRing method)