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New posts in Compactness

Examples of almost compact spaces.

May 10, 2021

The subspace $C$ of the space $(X,d)$ is compact

May 10, 2021

Willard 17R; uncountably many compact subsets of real line

May 09, 2021

Why do we define compactness the way we do?

May 09, 2021

When does every compact $A$ in a topology satisfy $A⊆B⊆C$ for some open $B$ and compact $C$?

May 09, 2021

Is it possible to construct a continuous and bijective map from $\mathbb{R}^n$ to $[0,1]$?

May 09, 2021

How to Motivate Open-Cover Formulation of Compactness in a Metric Space?

May 08, 2021

$T_1$ spaces where the closure of a compact set is not compact

May 08, 2021

Can anyone explain a compact set intuitive way?

May 08, 2021

Do non-compact spaces always contain "big" closed subsets?

May 08, 2021
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