Return to Question

In Top, the monos are the injective maps and the regular monos are the subspace inclusions. Is there a (similarly pithy) categorical description for the open subspace inclusions?

(Such maps are classified by maps into the Sierpinski space. (See comments.))

In Top, the monos are the injective maps and the regular monos are the subspace inclusions. Is there a (similarly pithy) categorical description for the open subspace inclusions?

In Top, the monos are the injective maps and the regular monos are the subspace inclusions. Is there a (similarly pithy) categorical description for the open subspace inclusions?

In Top, the monos are the injective maps and the regular monos are the subspace inclusions. Is there a (similarly pithy) categorical description for the open subspace inclusions?

(Such maps are classified by maps into the Sierpinski space. (See comments.))

In Top, the monos are the injective maps and the regular monos are the subspace inclusions. Is there a categorical description for the open subspace inclusions?

In Top, the monos are the injective maps and the regular monos are the subspace inclusions. Is there a (similarly pithy) categorical description for the open subspace inclusions?