Clonoids of Boolean functions with essentially unary, linear, semilattice, or 0- or 1-separating source and target clones

Fuente: arXiv
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Main Author: Lehtonen, Erkko
Format: Preprint
Published: 2024
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author Lehtonen, Erkko
author_facet Lehtonen, Erkko
contents Extending Sparks's theorem, we determine the cardinality of the lattice of $(C_1,C_2)$-clonoids of Boolean functions for certain pairs $(C_1,C_2)$ of clones of essentially unary, linear, or $0$- or $1$-separating functions or semilattice operations. When such a $(C_1,C_2)$-clonoid lattice is uncountable, the proof is in most cases based on exhibiting a countably infinite family of functions with the property that distinct subsets thereof always generate distinct $(C_1,C_2)$-clonoids. In the cases when the lattice is finite, we enumerate the corresponding $(C_1,C_2)$-clonoids. We also provide a summary of the known results on cardinalities of $(C_1,C_2)$-clonoid lattices of Boolean functions.
format Preprint
id arxiv_https___arxiv_org_abs_2412_01107
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Clonoids of Boolean functions with essentially unary, linear, semilattice, or 0- or 1-separating source and target clones
Lehtonen, Erkko
Combinatorics
Rings and Algebras
Extending Sparks's theorem, we determine the cardinality of the lattice of $(C_1,C_2)$-clonoids of Boolean functions for certain pairs $(C_1,C_2)$ of clones of essentially unary, linear, or $0$- or $1$-separating functions or semilattice operations. When such a $(C_1,C_2)$-clonoid lattice is uncountable, the proof is in most cases based on exhibiting a countably infinite family of functions with the property that distinct subsets thereof always generate distinct $(C_1,C_2)$-clonoids. In the cases when the lattice is finite, we enumerate the corresponding $(C_1,C_2)$-clonoids. We also provide a summary of the known results on cardinalities of $(C_1,C_2)$-clonoid lattices of Boolean functions.
title Clonoids of Boolean functions with essentially unary, linear, semilattice, or 0- or 1-separating source and target clones
topic Combinatorics
Rings and Algebras
url https://arxiv.org/abs/2412.01107