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How to approximate fuzzy sets: mind-changes and the Ershov Hierarchy
Computability theorists have introduced multiple hierarchies to measure the complexity of sets of natural numbers. The Kleene Hierarchy classifies sets according to the first-order complexity of their defining formulas. The Ershov Hierarchy classifies limit computable sets with respect to the number...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Netherlands
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9902436/ https://www.ncbi.nlm.nih.gov/pubmed/36777490 http://dx.doi.org/10.1007/s11229-023-04056-y |