Unrectifiable normal currents in Euclidean spaces

Abstract

We construct in ${\mathbb{R}}^{k+2}$ a $k$-dimensional simple normal current whose support is purely $2$-unrectifiable. The result is sharp because the support of a normal current cannot be purely $1$-unrectifiable and a $(k+1)$-dimensional normal current can be represented as an integral of $(k+1)$-rectifiable currents. This gives a negative answer to the (revised version) of a question of Frank Morgan (1984).

Gave proper credit to Frank Morgan for posing the question (1984) in the abstract and the intro