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New posts in compactness
Inverse image of a compact set is compact
general-topology
continuity
compactness
When is the image of a proper map closed?
general-topology
continuity
compactness
closed-map
Contraction Map on Compact Normed Space has a Fixed Point
compactness
normed-spaces
fixed-point-theorems
fixed-points
Why is an open interval not a compact set?
general-topology
compactness
If $S\times\mathbb{R}$ is homeomorphic to $T\times\mathbb{R}$, and $S$ and $T$ are compact, can we conclude that $S$ and $T$ are homeomorphic?
general-topology
manifolds
compactness
Compact Metric Spaces and Separability of $C(X,\mathbb{R})$ [duplicate]
functional-analysis
metric-spaces
compactness
Any infinite set of a compact set $K$ has a limit point in $K$?
general-topology
compactness
Why we use the word 'compact' for compact spaces?
soft-question
terminology
compactness
Compact topological space with closed graph implies continuity
general-topology
continuity
compactness
What do compact sets look like in the rationals?
general-topology
compactness
Compactness and Hausdorffness
general-topology
compactness
Nested open cover and compactness
real-analysis
general-topology
compactness
Is Stone-Čech compactification the only one with universal property?
general-topology
compactness
universal-property
compactification
Is a discrete set inside a compact space necessarily finite?
general-topology
compactness
$(X,\mathscr T)$ is compact $\iff$ every infinite subset of $X$ has a complete limit point in $X$.
general-topology
compactness
Understanding Alexandroff compactification
general-topology
category-theory
compactness
Proving that $S=\{\frac{1}{n}:n\in\mathbb{Z}\}\cup\{0\}$ is compact using the open cover definition
real-analysis
general-topology
analysis
compactness
Isometry in compact metric spaces
metric-spaces
compactness
lipschitz-functions
Proof that the continuous image of a compact set is compact [duplicate]
real-analysis
analysis
proof-explanation
compactness
Compactness of the set of $n \times n$ orthogonal matrices
matrices
compactness
orthogonal-matrices
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