Punctually presented structures I: Closure theorems
COMPUTABILITY-THE JOURNAL OF THE ASSOCIATION CIE(2023)
摘要
We study the primitive recursive content of various closure results in algebra and model theory, including the algebraic, the real, and the differential closure theorems. In the case of ordered fields and their real closures, our result settles a question recently raised by Selivanova and Selivanov.
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关键词
Primitive recursion,algebraic closure,constructive models
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