On Products of Delta Distributions and Resultants

We prove an identity in integral geometry, showing that if $P_x$ and $Q_x$ are two polynomials, $\int {\rm d}x\, δ(P_x) \otimes δ(Q_x)$ is proportional to $δ(R)$ where $R$ is the resultant of $P_x$ and $Q_x$.

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