Monotone Jónsson operations and near unanimity functions (Q1842598)
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scientific article; zbMATH DE number 750792
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Monotone Jónsson operations and near unanimity functions |
scientific article; zbMATH DE number 750792 |
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Monotone Jónsson operations and near unanimity functions (English)
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27 July 1995
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The concepts of nonextendible colored posets and zigzags of a poset are introduced. Some important properties of zigzags are proven. By using them, the author gives a proof of the well-known conjecture that any finite bounded poset which admits Jónsson operations, also admits a near-unanimity function. An infinite poset is presented showing that finiteness cannot be dropped in this conjecture.
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colored posets
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zigzags
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Jónsson operations
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near-unanimity function
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