Conservation theorems on semi-classical arithmetic
Conservation theorems on semi-classical arithmetic
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半经典算术守恒定理
DOI:
10.1017/jsl.2022.25
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发表时间:
2022
期刊:
影响因子:
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通讯作者:
Makoto Fujiwara and Taishi Kurahashi
中科院分区:
文献类型:
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作者:
Taishi Kurahashi;Yuya Okawa;V. Yu. Shavrukov and Albert Visser;Makoto Fujiwara and Taishi Kurahashi
We systematically study conservation theorems on theories of semi-classical arithmetic, which lie in-between classical arithmetic . In the same manner, we also characterize conservation theorems for other well-studied classes of formulas by fragments of classical axioms or rules. This reveals the entire structure of conservation theorems with respect to the arithmetical hierarchy of classical principles.