Sequent calculus proof theory of intuitionistic apartness and order relations
Sequent calculus proof theory of intuitionistic apartness and order relations
复制标题
直觉相异性和序关系的序贯微积分证明理论
DOI:
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发表时间:
1999
影响因子:
0.3
通讯作者:
Sara Negri
中科院分区:
文献类型:
--
作者:
Sara Negri
Abstract. Contraction-free sequent calculi for intuitionistic theories of apartness and order are given and cut-elimination for the calculi proved. Among the consequences of the result is the disjunction property for these theories. Through methods of proof analysis and permutation of rules, we establish conservativity of the theory of apartness over the theory of equality defined as the negation of apartness, for sequents in which all atomic formulas appear negated. The proof extends to conservativity results for the theories of constructive order over the usual theories of order.