Inside a ball in ,
is compact under the flat norm.
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References
Morgan, F. "What Is a Surface?" Amer. Math. Monthly 103, 369-376, 1996.Referenced on Wolfram|Alpha
Compactness Theorem
Cite this as:
Weisstein, Eric W. "Compactness Theorem."
From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/CompactnessTheorem.html
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