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New posts in compactness
$3$ equivalent definitions of compactness
general-topology
solution-verification
compactness
nets
Prove: Every compact metric space is separable
general-topology
metric-spaces
compactness
Fiber bundle is compact if base and fiber are
general-topology
compactness
fiber-bundles
Topology: Example of a compact set but its closure not compact
general-topology
compactness
A subset of a compact set is compact?
general-topology
proof-writing
compactness
Can a countable dense subset be split into two disjoint dense subsets?
general-topology
compactness
connectedness
separable-spaces
continuum-theory
Mrówka spaces are first-countable
general-topology
compactness
separation-axioms
first-countable
Topological spaces in which every proper closed subset is compact
general-topology
compactness
examples-counterexamples
Is there a reference for compact imbedding of Hölder space?
real-analysis
functional-analysis
compactness
holder-spaces
How to prove the resolvent of this operator is compact? [closed]
functional-analysis
operator-theory
compactness
spectral-theory
A direct proof (using net convergence) that sequential compact metric space is compact
general-topology
metric-spaces
compactness
nets
A continuous bijection from a compact space to a $T_2$ space is always a homeomorphism
general-topology
continuity
compactness
separation-axioms
Showing one point compactification is unique up to homeomorphism
general-topology
compactness
compactification
How many compact Hausdorff spaces are there of a given cardinality?
general-topology
set-theory
compactness
cardinals
separation-axioms
Proving the inverse of a continuous function is also continuous
real-analysis
metric-spaces
continuity
compactness
inverse
A theorem due to Gelfand and Kolmogorov
general-topology
functional-analysis
commutative-algebra
ring-theory
compactness
A simple proof that compactness implies closeness and boundedness in metric space
general-topology
metric-spaces
solution-verification
compactness
Equivalence of reflexive and weakly compact
functional-analysis
banach-spaces
normed-spaces
compactness
Compactness of $\operatorname{Spec}(A)$
general-topology
commutative-algebra
compactness
Understanding the concepts of topologies and equivalent metrics
real-analysis
general-topology
metric-spaces
compactness
equivalent-metrics
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