Geodesic
Characterization of regular convolutions
Algebra and discrete mathematics, Tome 25 (2018) no. 1, pp. 147-156.

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A convolution is a mapping $\mathcal{C}$ of the set $Z^{+}$ of positive integers into the set ${\mathscr{P}}(Z^{+})$ of all subsets of $Z^{+}$ such that, for any $n\in Z^{+}$, each member of $\mathcal{C}(n)$ is a divisor of $n$. If $\mathcal{D}(n)$ is the set of all divisors of $n$, for any $n$, then $\mathcal{D}$ is called the Dirichlet's convolution [2]. If $\mathcal{U}(n)$ is the set of all Unitary(square free) divisors of $n$, for any $n$, then $\mathcal{U}$ is called unitary(square free) convolution. Corresponding to any general convolution $\mathcal{C}$, we can define a binary relation $\leq_{\mathcal{C}}$ on $Z^{+}$ by `$m\leq_{\mathcal{C}}n$ if and only if $ m\in \mathcal{C}(n)$'. In this paper, we present a characterization of regular convolution.
Keywords: semilattice, lattice, prime filter, cover, regular convolution.
Mots-clés : convolution, multiplicative, co-maximal 
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Sankar Sagi. Characterization of regular convolutions. Algebra and discrete mathematics, Tome 25 (2018) no. 1, pp. 147-156. http://geodesic.mathdoc.fr/item/ADM_2018_25_1_a11/

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