## $$\Delta_{2}^{0}$$-categoricity in Boolean algebras and linear orderings.(English)Zbl 1016.03036

Summary: We characterize $$\varDelta _2^0$$-categoricity in Boolean algebras and linear orderings under some extra effectiveness conditions. We begin with a study of the relativized notion in these structures.

### MSC:

 03C57 Computable structure theory, computable model theory 03D45 Theory of numerations, effectively presented structures 03C35 Categoricity and completeness of theories
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### References:

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