The natural operators T|Mfn→T*Tr*and T| Mfn→Λ2T*Tr*
Włodzimierz M. Mikulski · Colloquium Mathematicum · 2002
Let $r$ and $n$ be natural numbers. For $n\geq 2$ all natural operators $T_{| {\cal M} f_n}\rightsquigarrow T^*T^{r*}$ transforming vector fields on $n$-manifolds $M$ to $1$-forms on $T^{r*}M=J^r(M,{\mathbb R})_0$ are classified. For $n\geq 3$ all natural