Introduzione
Abstract
En
Given a countably paracompact normal space
with a closed subspace
and a finite derected graph
with a subgraph
, there are bijections from the sets of homotopy classes
and
to the sets of o*-homotopy classes
and
respectively (see 3).Here we prove,by some examples,that certain conditions on
weaker than the ones required in (3) are not sufficent to prove the results given above.
Given a countably paracompact normal space
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DOI Code:
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