Flat Norm
The flat norm on a current is defined by
where partialR is the boundary of R.
See also
Compactness Theorem, CurrentExplore with Wolfram|Alpha
WolframAlpha
More things to try:
References
Morgan, F. "What Is a Surface?" Amer. Math. Monthly 103, 369-376, 1996.Referenced on Wolfram|Alpha
Flat NormCite this as:
Weisstein, Eric W. "Flat Norm." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/FlatNorm.html