Abstract:
A classification is given of differential algebras that include $r^\alpha$,
$\delta(x)$, $x\in R^n$, $\alpha=0,±1,±2,\dots$ and satisfy the condition $\varphi\psi=0$ for elements $\varphi$, $\psi$: $\operatorname{supp}\varphi\subseteq\{0\}$,
$\operatorname{supp}\psi\subseteq\{0\}$.
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