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first-countable space · Vinony

EntityQ926996· pop 12· linked from 74 articles

first-countable space

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topological space in which every point admits a countable neighborhood basis

Connections

second-countable space

International Standard Book Number

continuous function

topological space

limit of a sequence

limit of a function

algebraic variety

uncountable set

Categories

General topology Properties of topological spaces

Sources

wikipedia.externallinksexternallink

Similar entities

Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).

second-countable space

Entitydist 0.23

finite topological space

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Entitydist 0.48

locally finite collection

Entitydist 0.49

topological vector space

Entitydist 0.51

sequential space

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Lindelöf's lemma

Entitydist 0.54

discrete topology

Entitydist 0.55

countable chain condition

Entitydist 0.56

noetherian topological space

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initial topology

Entitydist 0.56

topological data analysis

Entitydist 0.62

What links here74 pages

countably compact space

compactly generated space

axiom of countability

topological group

operator topology

lower limit topology

Alexander Arhangelskii

continuous function

subspace topology

metrizable space

first uncountable ordinal

trivial topology

general topology

extremally disconnected space

locally connected space