In mathematics, and more specifically in general topology, compactness is a property that generalizes the notion of a subset of Euclidean space being closed (that is, containing all its limit point) and bounded (that is, having all its points lie within some fixed distance of each other).
A rectangle
A closed interval
A finite set of points
A triangle
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Compact set
Vector space
Lattices
Polytopes
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20th Century
19th Century
18th Century
17th Century
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Isaac Newton
Bernard Bolzano
Albert Einstein
James McCaffrey
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1928
1888
1817
1785
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Decimal point
Starting point
Ending point
Limit point
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Two
One
Five
Four
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Albert Einstein
James McCaffrey
Karl Weierstrass
Isaac Newton
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50 years
20 years
10 years
100 years
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