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Cylinder as a punctured plane
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Area of mathematics
Analysis
Complex analysis
Riemann surfaces
Punctured Riemann surface
Punctured complex plane
Created
2026-09-24
Updated
2026-09-24
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Polar coordinates
give
C
∗
≅
S
1
×
R
after taking logarithmic
radius
.
Ancestors
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Punctured complex plane
Punctured Riemann surface
Riemann surfaces
Complex analysis
Analysis
Area of mathematics
Mathematics
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