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math.CT2021
Shape of compacta as extension of weak homotopy of finite spaces
Pedro J. Chocano, Manuel A. Morón, Francisco R. Ruiz del Portal
We construct a category that classifies compact Hausdorff spaces by their shape and finite topological spaces by their weak homotopy type.
math.CT2004
Isomorphisms in pro-categories
J. Dydak, F. R. Ruiz del Portal
A morphism of a category which is simultaneously an epimorphism and a monomorphism is called a bimorphism. In \cite{DR2} we gave characterizations of monomorphisms (resp. epimorphi…