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Keywords:
circular convolution property
circular convolution property
Summary:
We consider a commutative ring $\operatorname R$ with identity and a positive integer $\operatorname N$. We characterize all the 3-tuples $(\operatorname L_1,\operatorname L_2,\operatorname L_3)$ of linear transforms over $\operatorname R^{\operatorname N}$, having the ``circular convolution'' pro\-perty, i.e\. such that $x\ast y=\operatorname L_3(\operatorname L_1 (x)\otimes \operatorname L_2 (y))$ for all $x,y \in \operatorname R^{\operatorname N}$.
References:
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