Concepts
Second-countable space
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Concepts
Second-countable space
Topological space whose topology has a countable base
epic · Q1363919
Related cards · first-countable space
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Polish space
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Concepts
Long line (topology)
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Concepts
Discrete space
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Concepts
Metrizable space
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Concepts
Hawaiian earring
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Concepts
Completely metrizable space
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Related cards · separable space
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Polish space
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Concepts
Sierpiński space
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Concepts
Baire space (set theory)
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Concepts
Finite topological space
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Concepts
Segal–Bargmann space
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Concepts
Sorgenfrey plane
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