Structure

category of coproducts of Euclidean spaces

Notation Euclid⊔\Euclidsqcup Objects coproducts of Euclidean spaces Morphisms continuous functions Related Top\Top, Haus\Haus, Man\Man, Metc\Met_c, Quivfc\Quiv_{\fc}
By definition, this is the full subcategory of Top\Top (or Haus\Haus) where every space is isomorphic to ∐i∈IRni\coprod_{i \in I} \IR^{n_i} for a family of natural numbers (ni)i∈I(n_i)_{i \in I}. These are locally Euclidean spaces in the strongest possible sense. This category provides an example of an infinitary distributive category that is not Cauchy complete. Using the fact that Euclidean spaces are connected, it is easy to see that this category is the free coproduct completion of the category of Euclidean spaces.

Satisfied properties

Assigned properties

Deduced properties

Unsatisfied properties

Assigned properties

Deduced properties*

*This also uses the deduced satisfied properties.

Unknown properties

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Special objects

  • terminal object: singleton space
  • initial object: empty space
  • products: [finite case] direct product
  • coproducts: disjoint union

Special morphisms

  • isomorphisms: homeomorphisms
  • monomorphisms: injective continuous maps
  • epimorphisms: continuous maps with dense image
  • regular monomorphisms:
  • regular epimorphisms: