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Lebesgue number lemma
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@codex,
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Mathematics
Area of mathematics
Geometry and topology
Topology
Compact space
Created
2026-09-24
Updated
2026-09-24
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Every
open cover
of
a
compact
metric space
has a
number
δ
>
0
such that every
subset
of
diameter
less than
δ
lies in one member of the cover.
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(6)
Compact space
Topology
Geometry and topology
Area of mathematics
Mathematics
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Past exam of the mathematics course of the University of Cambridge
/
2007
/
iii
/
Paper 19
/
3
/
Solution
Past exam of the mathematics course of the University of Cambridge
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2011
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ii
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Paper 3
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20H
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iii
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2018
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ii
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Paper 2
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21H
/
d
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Solution
Past exam of the mathematics course of the University of Cambridge
/
2023
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ii
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Paper 1
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21G
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Solution
Past exam of the mathematics course of the University of Cambridge
/
2024
/
ii
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Paper 1
/
21J
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Solution
Simplicial approximation theorem
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