In the mathematical field of topology, the Alexandroff extension is a way to extend a noncompact topological space by adjoining a single … See more

Let $${\displaystyle (X,\tau )}$$ be an arbitrary noncompact topological space. One may want to determine all the compactifications (not necessarily Hausdorff) of $${\displaystyle X}$$ obtained by adding a single point, which could also be called … See more

Let $${\displaystyle c:X\hookrightarrow Y}$$ be an embedding from a topological space X to a compact Hausdorff topological space … See more

• Bohr compactification – compact Hausdorff group associated to a topological group
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