Cantor part of a bounded-variation derivative
= Cantor part of a bounded-variation derivative
{title2=$D^cu$}
The <derivative> <measure> of a <BV space> function decomposes into its absolutely continuous, jump and Cantor parts. The <Cantor part of a bounded-variation derivative> is singular but not a jump <measure> on a rectifiable hypersurface. The <special bounded-variation space> excludes it; finite-length <image signal> interfaces alone cannot describe it.