A decidable countably categorical model without nontrivial recursive automorphisms (Q1825864)
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scientific article; zbMATH DE number 4121978
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A decidable countably categorical model without nontrivial recursive automorphisms |
scientific article; zbMATH DE number 4121978 |
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A decidable countably categorical model without nontrivial recursive automorphisms (English)
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1989
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It is well known that every countably categorical model has continuum many automorphisms. In this paper it is shown that in constructive model theory this is not valid: there exists a countably categorical decidable model without nontrivial recursive automorphisms.
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countably categorical model
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constructive model theory
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recursive automorphisms
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