

It is well-known that the set of Boolean threshold functions can be characterized by pairs of relations called relational constraints. In this paper, we extend this characterization to encompass multilevel threshold functions using the framework of relational constraints. Specifically, we define a countably infinite set of pairs of relations that succinctly captures the set of multilevel threshold functions. For each pair of relations, our approach ensures that when a multilevel threshold function is applied to rows of any matrix, with its columns drawn from the first relation, the resulting output corresponds to an element from the second relation. © 2024 IEEE.
| Engineering uncontrolled terms | ClonematrixMultilevelsRelational characterizationRelational constraintThreshold functions |
|---|---|
| Engineering main heading: | Boolean functions |
| Funding sponsor | Funding number | Acronym |
|---|---|---|
| Science Fund of the Republic of Serbia | 6458932 | |
| 451-03-65/2024- 03/200156 | ||
| 01-3394/1 |
This research has been supported by the Science Fund of the Republic of Serbia (project \u201CALADDIN\u201D, no. SFRS#6458932) and Ministry of Science, Technology Development and Innovation (Contract No. 451-03-65/2024- 03/200156) and the Faculty of Technical Sciences, University of Novi Sad through project \u201CScientific and Artistic Research Work of Researchers in Teaching and Associate Positions at the Faculty of Technical Sciences, University of Novi Sad\u201D (No. 01-3394/1). We thank the anonymous referees for their valuable comments, which significantly enhanced the previous version of the manuscript.
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